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[[quoteright:350:[[Film/TheDarkKnightRises https://static.tvtropes.org/pmwiki/pub/images/rsz_confidential_4397621.jpg]]]]
[[caption-width-right:350: Running out of black ink again...]]
->'''Joe Quincy:''' The report exists?\\
'''Leo [=McGarry=]:''' Well I can't tell you that, Joe; it was classified. But I can tell you it was classified by the Defense Department.
-->-- ''Series/TheWestWing'', "Life On Mars"

Information which is kept secret from most people, on an organised basis. A trope common in [[SpyFiction espionage]] and [[MilitaryAndWarfareTropes military fiction]]. TruthInTelevision, of course; governments (and other organisations) do keep formal secrets. Classification systems can range from internal documents that everyone at a workplace can immediately access and make an unlimited number of copies of to very rigid and quite complex compartmentalized systems where the holder must go through arduous background investigations and have an official “need to know” in order to get access to, in most cases, only a small part of the puzzle.

In fiction, this often materializes as red tape used by characters in order to withhold certain information from others. This occasionally leads to PoorCommunicationKills. (And that's TruthInTelevision too.) Often PlayedForDrama, but sometimes it can also be PlayedForLaughs. In more cynical cases, the classification system is abused by {{corrupt politician}}s and {{obstructive bureaucrat}}s to cover up their misdeeds and embarrassments.

Of course this leads to the question as to ''why would someone even bother to keep records of their misdeeds in the first place'', as the only people who want to know are either the people already doing them or people who want to access them to expose what is inside. This is the equivalent of keeping incriminating evidence with yourself for no reason.

Compare IdTellYouButThenIdHaveToKillYou, ConvenientlyInterruptedDocument, and PlausibleDeniability. See also OverTheTopSecret for the "greatest secret in the world" stuff, and LooseLips for the dangers of accidentally letting slip useful bits of information in passing.
----
!!Examples:
[[foldercontrol]]

[[folder:Anime & Manga]]
* In the anime adaptation of ''Manga/LuckyStar'' Patricia Martin (who's cosplaying as Mikuru Asahina at the CosplayCafe she and Konata work at) references ''Literature/HaruhiSuzumiya'' by saying "Classified information" when Kagami asks her what's in the juice they serve.
* Referenced in ''Anime/MobileSuitGundam'' with "Operation Star One", the codename for the Earth Federation Forces counterattack. Due to an earlier occasion when Operation Odessa (the EFF counterattack on Earth) was nearly undone thanks to a traitorous general, for Operation Star One EFF supreme commander General Revil keeps his cards close to the chest and did not disclose what the "star" the operation was aiming for actually was. Three separate fleets are deployed to three different locations, and in-universe characters debate whether the fleets will strike at the lunar city of Granada, the asteroid fortress of A Baoa Qu, or make a beeline right for Zeon's home colony in Side 3. It's only once the operation begins and the fleets are in motion that he reveals the goal is A Baoa Qu.
* ''Manga/SpyXFamily'': A good half of the personal details in Loid's profile in Volume 1 are redacted out, essentially anything that would reveal something about his background. When his birth name's given in Mission 62-1, it's redacted out, with his childhood code name Advisor being used instead.
[[/folder]]

[[folder:Comic Books]]
* Subverted in ''ComicBook/TheWalkingDead''; the scientist for the Center for Disease Control who's carrying the cure for the ZombieApocalypse refuses to reveal any further details because they're classified. [[spoiler:Turns out he's actually a school teacher making up stories so people will protect him.]]
* ''ComicBook/ThePunisherMAX'' version of Bullseye used to be a military lawyer who'd never fired a gun before suddenly disappearing for several years, and upon his return, had become a deranged assassin whose bodycount would put most armies to shame, and that's not even touching the atrocities he commits even when no one is paying him. Exactly what happened to turn him into this is unknown, while working for the Kingpin, a lawyer finds the army files on Bullseye, but mentions that most of the info has been blacked out or redacted to hell, and what little info is there makes no sense.
* ''ComicBook/UltimateGalactusTrilogy''
** After retrieving the Vision, everything about her and Gah Lak Tus was classified information of the highest level.
** Sam has to call the woman "Black Widow, because he's not cleared for real names.
** The Kree also have it. Only the Supreme Intelligence fully knows about Gah Lak Tus, and this knowledge is only passed to high-ranked Kree military leaders on a need-to-know basis. [[TheWorldIsNotReady The Kree are not ready]] for this knowledge, and they would all gone mad if they knew the full details.
[[/folder]]

[[folder:Fan Works]]
* ''Fanfic/AbraxasHrodvitnon'': The existence of the abandoned Monarch outpost is buried under a ton of this.
* ''Fanfic/TheDresdenFillies'': In [[https://www.fimfiction.net/story/13969/18/the-dresden-fillies-false-masks/chapter-seventeen Chapter 17]] of ''False Masks'', when classified events are being discussed, the phrase is used:
--> "Really?" Bronze asked. "So just what did you do? The only thing I heard about that incident was that some crazy pony tried to kidnap the Elements of Harmony."\\
"That’s all you're going to hear," Lt. Surge barked, drawing shocked stares and glares from everypony at the table, but he didn’t waver until Princess Luna frowned at him. Under her stare, he unbent just enough to add, "It's classified information."\\
"So what do ''you'' know about it, buddy?" Dash asked challengingly.\\
Lt. Surge's ears laid back in annoyance. "Nothing. I don't even know what level of clearance you need for it. I suspect that there are only three or four ponies outside of those directly involved who know what actually happened."
* ''Fanfic/ACertainDrollHivemind'': When doing Powers Testing, [[HiveMind the Network]] mentions that some information may be classified so they don't know it:
--> The Network is unaware of any enhancements to sensory capabilities which [[ThePowerOfCreation Dark Matter]] would grant. Perhaps they are classified.
* ''Fanfic/{{Evershade}}'': As said by an MCO agent:
--> Linda gave a regretful nod, and settled herself back firmly in her seat. "It's policy to try and keep the confidentiality of some mutants, especially younger ones. We keep records of them, but public information is classified for a reason."
* In ''Fanfic/ImaginarySeas'', due to being recognized as one of the Olympians, Percy's Servant stat sheet is redacted and abbreviated by the Interstellar Emigration Treaty that brought the gods to Earth. This conveniently serves as a FramingDevice to slowly reveal Percy's capabilities over the course of the story, as more of the restrictions are lifted each time he breaks out new abilities in a fight.
* ''Fanfic/OlivesLastPartner'': Todd's HeelFaceTurn and his attack on Precinct 13579 is so confidential that not even Olive and Oscar know the full story of what happened to him. The only one who does know is Oprah, and she has a ruling in place that no one is allowed to talk about him to the extent that just uttering his ''name'' is a violation.
* In the ''WesternAnimation/StarWarsRebels'' fanfiction ''Fanfic/ASwordToPass'', when Ezra catches Elair in the Mandalor palace communication room with a data spike. He demands to know who she is stealing information for, but Elair says she can't say but it's for the "good guys".
[[/folder]]

[[folder:Films -- Animated]]
* ''WesternAnimation/{{Bolt}}'':
-->'''Mittens''': So you got superpowers. Does that make you some kind of superdog?\\
'''Bolt''': That information is classified.
[[/folder]]

[[folder:Films -- Live-Action]]
* ''Film/CaptainAmericaTheWinterSoldier'', S.H.I.E.L.D.'s system of clearance levels appears again. Steve's a little unhappy with how Nick Fury continues to hide information from him.
* ''Film/{{Interstellar}}'': The ''Endurance'' mission in its entirety, especially the wormhole. It was discovered fifty years before the events of the movie, and afterwards ignored by everyone but NASA until JustBeforeTheEnd.
* The ''Franchise/JamesBond'' [[Literature/ForYourEyesOnly story]] & film ''Film/ForYourEyesOnly'' is named after a real document security level: don't show to ''anyone'', even if they have the same clearance as you (or higher).
* The ''Franchise/MonsterVerse'' started with ''Film/Godzilla2014'' has {{Title Sequence}}s using redacted text for both credits and exposition on the history of the title monster. Although when [[FreezeFrameBonus paused right before the redaction]], the combination of text and credit makes for [[CreditsGag funny sentences]] ("The record of monster clashes is EDITED BY JOSH SCHAEFFER, ACE to reflect ongoing battles"). Bar ''Film/KongSkullIsland'', the other movies in the series use the same style.
* ''Film/ResidentEvil2002'': the team leader is giving an InfoDump about the Umbrella research lab under Raccoon City.
-->A top-secret research facility owned and operated by the Umbrella Corporation. The Hive houses over 500 technicians, scientists and support staff. They live and work underground. Their research is of the highest importance. Its nature is...classified.
* ''Film/ShortCircuit'': When Stephanie first meets Ben and Newton, she asks them what the purpose of these advanced robots is (prototype weapons).
-->'''Ben''': It's top-secret crap.\\
'''Stephanie''': Yeah, I figured.
* ''Film/MyFavoriteMartian'' has an example when a [[TheMenInBlack Man in Black]] investigating the site of a crashed ship complains that they're not going to get anything out of this... just like "that [[RoswellThatEndsWell Roswell fiasco]]". His boss immediately reprimands him, reminding him that "not only is that incident classified, but ''it never happened!''"
* In ''Film/Halo4ForwardUntoDawn'', at the end a couple of [[SuperSoldier SPARTAN-IIs]] take off their helmets, revealing surprisingly young faces. One of the cadets asks how old they are, to which Kelly replies "That's classified". [[spoiler:At the time, the [=IIs=] were roughly 14-15 years old (with the Master Chief himself having only turned 15 less than two months ago), and their existence had not yet been made public.]]
* In ''Film/TopGun'', [[TheProtagonist Maverick]] is shown to harbor considerable angst over what happened to his father, which feeds into his insecurities. Late in the film, his instructor finally reveals that his father died heroically, trying to save as many of his unit as he could. Unfortunately, the records of the engagement were classified, keeping Maverick in the dark, and his instructor even admits he's putting his own career at risk by revealing the truth.
* ''Franchise/StarTrek'':
** Project Genesis, which was a major plot point in both ''Film/StarTrekIITheWrathOfKhan'' and ''Film/StarTrekIIITheSearchForSpock'', is a highly classified project. Just to be read in on the basics of the project requires security authorization from a flag officer, and [=McCoy=] gets picked up by Federation Security when he starts blabbing a little too loudly about it in a spaceport bar (the fact he was also trying to charter a ship into a restricted area of space did not help).
** In ''Film/StarTrekIntoDarkness'', Scotty refuses to authorize the experimental long-range photon torpedoes Starfleet are trying to load onto Enterprise (and actually resigns in protest over the issue, because of the risk to the ship).
-->'''Scotty:''' [[WithAllDueRespect With all due respect]], photon torpedoes run on fuel. Now I cannae detect the type of fuel in these compartments because it's shielded. So I asked for the specifications and he said... ''(jerks his thumb toward Starfleet Security mook)''
-->'''Security mook:''' It's classified.\\
'''Scotty:''' It's classified. So I said, "No specs, ''no signature!'' "
* In ''Film/{{Airplane}}'', Ted Striker tells Elaine the time, approach direction and height of a bombing raid. He can't tell her when he'll be back as that's classified.
* Subverted in a USAF UsefulNotes/ColdWar InstructionalFilm on signals security. The protagonist listens to an intercepted recording of an airman inquiring about a project, only to be told it's secret. He assumes that this is an example of good security, but it's pointed out that by alerting the [[DirtyCommunists enemy]] that the project was secret, [[LooseLips they'd know to listen for any mention of that project name in future.]]
* Parodied in ''Film/AmericanUltra'', where Lasseter opens a document to find it entirely redacted except for about five words.
-->How am I supposed to read this?
* In ''Film/{{Robowar}}'', TheSquad are deliberately told nothing at all about the mission they're being sent on in order to keep the KillerRobot they are supposed to destroy a secret. The hope is that they will know nothing about the mission "before or after", and are only told that their mission is to "beach two rafts" on "an island". Naturally, they are utterly unprepared and nearly everyone is killed.
[[/folder]]

[[folder:Literature]]
* ''Literature/ArtemisFowl'': In the graphic novel, when profiles of characters appear, certain information is blacked out on the document.
* Creator/MichaelCrichton uses this effectively in his novel ''Literature/TheAndromedaStrain''. Files about the Wildfire Project are stamped CLASSIFIED, with a warning that if an unauthorized person reads it they could be sentenced to 20 years in jail and/or a fine of $20,000. When Hall asks about the warning, Leavitt observes that it's wrong.
--> '''Leavitt:''' Don't you believe it.\\
'''Hall''': Just a scare tactic?\\
'''Leavitt''': Scare, hell. If the wrong person reads this file, he just disappears.
* ''Literature/ACertainMagicalIndex'': In the Sisters arc (which the manga spinoff ''Manga/ACertainScientificRailgun'' also adapts), when Touma and Mikoto confront Mikoto's clones, they are asked to respond to a code. When they don't respond, they are informed that they will receive no additional information. Which is why neither of them discovers that the clones are [[ExpendableClone being brutally murdered]] until it's too late.
* ''Literature/GalaxyOfFear'' once has Tash given free rein at a computer in an Imperial research facility because she's logged in as a guest and can only get at public data. She quickly runs up against classified things... and manages to log in as someone with clearance to see them, because she guesses the [[ThePasswordIsAlwaysSwordfish amazingly obvious password]]. Later in the series there's an UnReveal related to classified information.
* ''Literature/HarryPotter'':
** In ''[[Literature/HarryPotterAndThePrisonerOfAzkaban Prisoner of Azkaban]]'', the locations of the Marauders. When Harry first sees the Marauder's Map in the possession of Fred and George, he isn't shown on the map, but once he is holding the map he is shown on it. He still does not seem to see the original Marauders on it, even when one is in his dorm. (This is different from the movie.)
** Percy's reasoning for not telling Ron, Harry and the others about the Triwizard Tournament's coming to Hogwarts in ''[[Literature/HarryPotterAndTheGobletOfFire Goblet of Fire]]'':
---> "It's classified information until such time as the Ministry sees fit to release it," said Percy stiffly. "Mr. Crouch was quite right not to disclose it."\\
"Oh, shut up Weatherby," said Fred.
* In ''Literature/HaruhiSuzumiya'', "Classified information" is basically Mikuru Asahina's catchphrase ("Kinsoku jikou", in Japanese), since she's a time traveler and she can't reveal too much about the future she's from. She's actually an interesting variant; the reason she says "classified information" is because of an information censor that was placed inside her that is always monitoring her speech to make sure she doesn't spill any futuristic time-breaking {{Info Dump}}s. She's surprised that when the restriction is lowered she can speak normally about things she couldn't say before.
-->'''Mikuru:''' I used ''classified information'' to contact the future or for ''classified information''... But when I hadn't heard from ''classified information'' for a week I thought something was wrong. And then ''classified information''... I was so shocked that I ''classified information'', but there was no ''classified information''... What should I do?
* In ''Literature/TheLaundryFiles'', The Laundry operates on a complicated codeword system. Things aren't simply classified into levels like "Secret" and "Top Secret", but each particular secret thing one might need to know about is assigned its own codeword, and you need to be cleared for it individually. For instance (and an illustration of just how impenetrable it gets), just being cleared for [[StarfishAliens ANNING BLUE SKULL]] and [[ApocalypseHow CASE NIGHTMARE GREEN]] doesn't mean you get to know anything about [[BeneathTheEarth DEEP SEVEN]], [[FishPeople BLUE HADES]], or CASE BROCCOLI GOLDENEYE. The Laundry being on ''occult'' intelligence agency, it's [[TongueTied literally impossible]] to deliberately spill the beans on a codeword to anyone not briefed on it.
* A variation in ''Literature/{{Slayers}}'' has Xellos and his catchphrase "This is a secret!" ("Sore wa himitsu desu!" in the original Japanese.)
* ''Literature/TheWarAgainstTheChtorr''. A robot is sent into an alien dome to flash it with {{EMP}}, hopefully killing any man-eating alien worms before TheSquad follows. A footnote helpfully informs us that an EMP-grenade will cook or curdle any living matter within a radius of ('''CLASSIFIED'''). A single charge will yield as many as ('''CLASSIFIED''') usable pulses. There is also the tendency of the flash to destroy any unshielded electronic gear within the larger radius of ('''CLASSIFIED''').
* In ''Literature/HaloLastLight'', Veta Lopis continually gets frustrated with Fred-104's replies to her questions being several different varieties of "it's classified". Lopis is a local investigator, tasked with finding a serial killer, while the UNSC is present on Gao to [[spoiler:recover the culprit, which happens to be a [[{{Precursors}} Forerunner]] [[AIIsACrapshoot ancilla]]]]. Later, Lopis is contacted by a mysterious woman on her radio, who, when asked for her name, replies that it's classified. Lopis then starts calling her "Ms. Classified". [[spoiler:It's actually Serin Osman, the protege of [[StateSec ONI]] head Admiral Parangosky.]]
* ''Literature/AbleTeam'':
** In "Texas Showdown", Able Team are sent to infiltrate a mercenary army after two previous attempts resulted in the agent's deaths. Carl Lyons says the BigBad must have people working for him in the US government, but Hal Brognola assures Able Team that all their operations are top secret. Gadgets Schwarz silently displays a stack of files on previous agents, each labelled TOP SECRET and DISAPPEARED, PRESUMED DEAD.
** In "Reign of Doom", Able Team is being smuggled through a civil war in Syria when they're stopped at a roadblock. The officer in charge demands to know what's in the truck, why they'd risk traveling at this time, why a 'Soviet' officer (actually a CIA agent) is with them...
-->'''Gadgets:''' What did you tell them?\\
'''CIA agent:''' Hey, is it my job to give out the facts? I told him straight -- it's a secret.
* Very common in Creator/TomClancy works. The [[Literature/JackRyan Ryanverse]], being about the inner workings of the CIA, discusses classification all the time. Ryan, as an analyst, only sees information as needed for what he's working on.
** As Acting Deputy Director of Intelligence in ''Literature/ClearAndPresentDanger'', Ryan is told that "need-to-know" still applies [[spoiler: as an excuse to keep him out of the loop of the SHOWBOAT and RECIPROCITY operations]].
** When Ryan becomes president in ''Literature/ExecutiveOrders'', things get a little more lax: he'll tell someone "that information does not leave this room", and they nod and agree.
** The security surrounding certain highly classified information figures prominently in ''Literature/TheHuntForRedOctober''. Intelligence from CARDINAL in particular, the CIA's mole in the office of a Politburo member, has only a select few cleared to see it, with even fewer being cleared to see the data before it's been sanitized to disguise its origin. Those not cleared for the raw data don't even know the CARDINAL code name, instead being given a different name which is changed regularly.
* The entire premise of ''Literature/SolarWarden'' is that there's an entire secret government program that deals with aliens. Apparently, they also possess a sizable SpaceNavy built using alien tech. When the main character first witnesses a UFO while on a covert mission to North Korea, he's told in no uncertain terms to forget what he saw and never repeat it to anyone. When he gets back home and asks his girlfriend whether she believes in aliens, he receives a call that threatens her life if he persists (this is despite them going to a nudist beach, so presumably their phones have been bugged). He's eventually invited to join the program and learns that there are multiple factions in the government that have their own goals involving the aliens. In the second book, it's also revealed that Project Stargate (involving remote viewing) was never actually shut down despite the official cover and continued in secret.
* ''Literature/RodAllbrightAlienAdventures'': When Rod learns of the existence of aliens, Captain Grakker defaults to "Classified information!" to shut down questions that he doesn't want to [[AlienNonInterferenceClause answer to an Earthling]] -- or just doesn't want to talk about. Rod [[OneLinerEcho fires it back]] when Grakker asks an insensitive question about his DisappearedDad.
* ''Literature/WorldWarZ'': A character mentions "Alpha Teams", elite special forces units inserted at the beginning of the zombie pandemic to "investigate, isolate, and [[DeadlyEuphemism eliminate]]" individual outbreaks. Apparently they were very successful, but their battle records have been sealed for 140 years.
[[/folder]]

[[folder:Live-Action TV]]
* Spoofed on ''Series/ThirdRockFromTheSun'':
-->'''Officer Don''': The FBI are coming into town tomorrow.\\
'''Dick''': What for?\\
'''Officer Don''': That's classified.\\
'''Tommy''': You have no idea, do you?\\
''[beat]''\\
'''Officer Don''': That's also classified.
* In ''[[Series/{{Blackadder}} Blackadder Goes Forth]]'', Captain Darling is outraged when Blackadder correctly predicts that the plan for the next big battle is to have everyone leave their trench and walk slowly towards the enemy. "That's classified information!"
* ''Series/BlakesSeven'': in "[[Recap/BlakesSevenS2E4Horizon Horizon]]", the Liberator encounters a planet on the edge of the galaxy protected by a forceshield. They try to find out more information from their MasterComputer, Zen. [[spoiler:Blake later gets a Federation flotilla to crash into the forceshield, betting their lives that the flotilla is no better informed than they are.]]
-->'''Blake:''' What are the surface conditions on Horizon?
-->'''Zen:''' Negative information.
-->'''Blake:''' Population?
-->'''Zen:''' Negative information.
-->'''Blake:''' Well, is there any information on Horizon?
-->'''Zen:''' Negative.
-->'''Blake:''' Well, is the information on Horizon classified?
-->'''Zen:''' Negative information.\\
'''Vila:''' Well, that was a whole lot of nothing.
* ''Series/TheBoys2019'': Invoked as a reason for Translucent's disappearance (as Vought doesn't want to admit their Supes are vulnerable at a time when they're pushing for {{Military Superhero}}es), though the PR men realize that being slightly more specific will work better, so they say he's on a mission in South America to investigate MS-13.
* ''Series/LeBureauDesLegendes'': In this espionage thriller, characters repeatedly tell each other, if you don't know, you're not supposed to know. Various documentation is marked classified. Just try to work out exactly who knows what.
* ''Series/DoctorWho'': "[[Recap/DoctorWhoS33E9Hide Hide]]": The Doctor easily convinces Palmer he's with Military Intelligence as he knows top secret information about Palmer's service in SOE. He then uses this trope when Palmer asks about his sonic screwdriver.
* ''Fleming: The Man Who Would Be Bond.'' While searching for a German nuclear scientist, Creator/IanFleming is stopped at an American checkpoint. He shows his authorization and when the American officer asks what he's doing in the area, snobbishly fobs him off with this trope. The American points out there are still [[TheRemnant SS units]] operating in the area and normally he'd provide an escort, but if Fleming's going to act like a jerk he won't bother.
* ''Series/{{Friends}}'': In the episode with Charlie Sheen as Phoebe's navy boyfriend, he fields any questions about submarines with, "I really can't say." Even innocuous ones like, "Do you get to look through a periscope?"
* Played for laughs in ''Series/{{Graceland}}''. Crime lord Bello needs someone to retrieve a package dumped off the coast of California. FBI Agent "Johnny" Tuttoro, who was once a [[UsefulNotes/NavySeals Navy Seal]] trainee, is able to pass himself off as an active Seal pulling jobs on the side for extra cash because all information about active Seals, including their missions and identities, are classified. When Bello questions Johnny and his qualifications, he replies to everything with "That's classified, sir" to Bello's mounting frustration. That is, until the final question...
-->'''Bello:''' If you won't answer my questions, how do I know if you can do this?!\\
'''Johnny:''' [Considers for a moment] You know UsefulNotes/{{Osama|BinLaden}}'s body?\\
'''Bello:''' Yes?\\
'''Johnny:''' Well, it ''used'' to be on the ocean floor.\\
'''Bello:''' [Does a shocked double take] Is that true?\\
'''Johnny:''' No, that's classified, sir.
* Regulary occured on ''Series/{{JAG}}''.
** In "Tribunal", Sturgis is assigned as co-defense counsel for the fictional Al-Qaida No 3 in the military tribunal held aboard a warship, and has an Army Special Forces captain on the stand to answer questions about unconventional warfare by US Forces and that of unlawful combatants. The implication of the final question being that there's not always a distinct difference between them.
-->'''Sturgis''': One final question. On certain operations, Special Forces personnel remove all insignia. Your dog tags, anything that could identify you. Is that correct?
-->'''Army Captain''': That's classified, sir.
-->'''Sturgis''': Let the record reflect that was not a ''[[YesNoAnswerInterpretation no]]''.
** One episode even has the title "Need To Know", in which Harm, Mac and Sturgis are assigned to get information declassified on a submarine which was lost at sea on a CIA mission off the Soviet coast in 1968.
-->'''Catherine Gale, CIA attorney''': If the Navy insists on convening a court of inquiry, the proceedings will have Top Secret level 1 protection. Inasmuch as the Angel Shark mission was in fact classified Top Secret level 2 that means that information and materials, which in accordance with Executive Order 12356, as well as OPNAVINST 5510.1 and [=DoD=] Directive 12043, require level 2 protection, may not be presented in level 1 proceedings. Clear?\\
'''Commander Harmon Rabb''': Oh, yeah. I think I get it. We can't tell the court why it needs to be declassified because the reason it's classified is classified.\\
'''Catherine Gale, CIA attorney''': You've got it.
* ''Series/MurdochMysteries'': "That's top secret" is practically government agent Terrence Meyers's catchphrase, much to the frustration of the Toronto Constabulary, who take the view that knowing what's actually going on might help them solve the murder of the week. Subverted in "Confederate Treasure":
-->'''Murdoch''': And what's the Government going to do with all of this found money?\\
'''Myers''': That's top secret.\\
'''Murdoch''': Really?\\
'''Myers''': No, not really. I have no idea. That's not my job.\\
'''Murdoch''': What exactly ''is'' your job, Mr Myers?\\
'''Myers''': Well, that ''is'' top secret.
* ''Series/{{Quiller}}''. In "The Tango Briefing", Quiller asks what the mission objective is and gets this trope from [[TheHandler Loman]]. In fact it's so classified even Loman doesn't know, [[TheBlindLeadingTheBlind though he's supposed to be running the mission.]]
* Comes up from time to time as an obstacle to relationships in ''Series/StargateSG1''. When you're a member of an elite military team that regularly travels to other planets risking your life to protect humanity from existential threats while importing advanced alien technology, covering that up makes for some awkward conversations with family, friends, love interests, etc. One episode also had SG-1 investigate the theft of tech from their alien allies (or friends). O'Neill confronts Colonel Maybourne, who tells him that it's classified. Jack points out that he has the highest security clearance possible. Maybourne counters that he has the highest ''military'' clearance. Shocked, Jack asks if it's a civilian operation, and Maybourne doesn't reply, but his non-reply is telling.
* Franchise/StarTrek
** ''Series/StarTrekTheNextGeneration'': Captain Picard receives a "Code 47" transmission. The computer even tells Picard that the information in this transmission is not to be shared with anyone unless absolutely necessary and there will be no record made of it being received.
** ''Series/StarTrekVoyager'' introduces to the Omega Directive. Classified as Captain's level and above, the Omega Directive supersedes all other Starfleet General Orders and regulations including the Prime Directive. Any captain in the field who encounters an Omega molecule is to immediately report it to Starfleet Command, which becomes a problem for Janeway when Command is tens of thousands of light years away.
** ''Series/StarTrekDiscovery'':
*** The Season 2 finale explains why the ship, the spore drive, Section 31, and Spock's adopted sister are never mentioned in any chronologically future installments. Starfleet classifies all knowledge of them after [[spoiler:the ''Discovery'' permanently travels to the [=33rd=] century]] and forces all participants to stay quiet under penalty of treason.
*** Similarly, the existence of the Mirror Universe is also classified, [[spoiler:in particular, how they got there, the fact that Captain Lorca had come from there, the fact that the ''U.S.S. Defiant'' would ''end up'' there, and the fact that the Captain Georgiou working for Section 31 had previously been the Terran Emperor in that universe.]] This introduces some complications early on when Burnham has to avoid providing Captain Pike with some pointedly relevant information about one of their associates in Section 31. [[spoiler:One way or another, Pike figured it out by the time he and Georgiou part ways, when she playfully announces her secret identity, and Pike laughs it off with a knowing wink.]]
*** And finally, the details of Spock's treatment [[spoiler:at a Starfleet psychiatric care facility]] is classified at an unusually high level [[spoiler:after he is accused of murdering three medical personnel and escaping]].
*** In Season 5, we find out that Starfleet has a particular mission type known as a Red Directive, which has a crew being asked to perform a top-secret mission. ''Discovery'' gets roped into this, but because the nature of the mission is so secret, not even Admiral Vance knows what's going on. [[spoiler:Burnham ultimately gets Korvich to talk, revealing that they're trying to find a device used by the Progenitors (from the ''TNG'' episode "The Chase") before it falls into the wrong hands]].
** ''Series/StarTrekPicard'':
*** In "The End Is the Beginning", Hugh is the Executive Director of the Borg Reclamation Project, yet he's not permitted to view Ramdha's Romulan dossier even though she's his patient in the Disordered Ward.
*** Later in the same episode, Hugh is astonished that Soji somehow knows that the imperial scout ship ''Shaenor'' with its 26 Romulan passengers was the last vessel assimilated by the Artifact because no one outside the Tal Shiar has access to that information.
*** In "Absolute Candor", Soji lampshades that the records on the Borg databases are classified.
*** Later, Narek informs Soji that Romulan passenger lists aren't made public, unlike Terran ones.
*** In "Broken Pieces", Enoch explains to Raffi that the octonary star system doesn't appear on modern Romulan star charts, but it was present in their ancient star maps. The general public has been led to believe that it's apocryphal, but it's actually a Zhat Vash cover-up to keep the location of the "Conclave of Eight" a secret.
** ''Series/StarTrekStrangeNewWorlds'' continues from DIS with Pike, Spock, and Number One refusing to talk about what happened to the ''Discovery'' to anyone else, even Admiral Robert April, the previous captain of the ''Enterprise''. The only time this is violated is when Pike allows Number One to reveal the reason for the Kylie having warp technology ([[spoiler:they observed the Battle of Xahea with their telescopes and used that knowledge to develop a warp bomb]]) in front of La'an, who isn't cleared to know. In a later episode, Spock mind-melds with La'an in order to jog her memory on her past as a prisoner of the Gorn, but the echo of [[spoiler:his goodbye to Michael]] is heard by La'an, who points out that [[spoiler:Spock's official records don't mention a sister]].
* A running gag on ''Series/TwinPeaks'' was that Major Briggs was unable to discover any details of his job, and would simply respond "That's classified" to most questions.
-->'''Bobby''': Dad? What is it that you... do?\\
'''Major Briggs''': That's classified.
* ''Series/TheWestWing'': As the series focuses on high levels of government this naturally comes up several times for varying reason. Characters who don't have clearance to know something are often asked to leave a room or given files with redacted text to cover what they aren't allowed to know.
* Common on ''Series/TheXFiles'' since most of what they work with has either been buried to make the FBI look good or has been buried because it's part of the conspiracy. Mulder's connections often get him information he never should have seen, though usually the classified information itself is completely bogus and has been "classified" to legitimize it.
[[/folder]]

[[folder:Newspaper Comics]]
* ''ComicStrip/CalvinAndHobbes'': PlayedForLaughs when Calvin attempts to invoke this trope - as an answer to a school test question.
-->"''[[spoiler:Where is Plymouth Rock?]] I am not presently at liberty to divulge that information, as it might compromise our agents in the field.''"
[[/folder]]

[[folder:Podcasts]]
* In ''The Chimera Project'' arc of ''Podcast/CoolKidsTable'', Void's file is almost entirely blacked out.
[[/folder]]

[[folder:Tabletop Games]]
* Tabletopgame/{{GURPS}} includes the concept of Security Clearance as a character advantage which can be bought with the points used in character creation, when applicable.
* [[TabletopGame/{{Paranoia}} We're sorry, citizen. That information is above your security clearance.]] Have a nice daycycle! [[spoiler:Though the High Programmers rulebook reveals that some information isn't available at ''any'' security clearance, because The Computer doesn't have it either. Other times, there's a ton of information, but no good way to know how accurate it is.]]
* [[TabletopGame/{{Warhammer 40000}} +++THIS ENTRY HAS BEEN EXPUNGED]] [[KnightTemplar BY ORDER OF THE]] [[BurnThewitch EMPEROR'S MOST HOLY INQUISITION+++]] Also +++ALL RECORDS DELETED. AUTHORIZATION UNKNOWN.+++ when dealing with the two missing Primarchs.
[[/folder]]

[[folder:Video Games]]
* ''VideoGame/ANNOMutationem'': There are various readable documents that contain assortments of information that is covered up by an obscurer. The context of the the hidden information can be disclosed once connected with previously acquired information.
* In ''VisualNovel/DoubleHomework'', [[spoiler:everything about Dr. Mosely/Zeta and her experiment]] falls under this.
* ''VisualNovel/TheGreatAceAttorney'': Iyesa Nosa and Satoru Hosonaga claim this when pressed on the slip-ups they made during their testimonies.
* ''VideoGame/MassEffect3'': [[MilitaryMaverick Primarch]] [[ReasonableAuthorityFigure Victus]] uses this in a rare out-of-character moment to avoid having to explain the [[spoiler:Turian fail-safe planet-destroying bomb on Tuchanka]]. Given the context of the game, Shepard can often pull this to avoid having to explain his missions to people who don't need to know. Culminates to when you avoid explaining why [[DaChief Commander Bailey]] should release an incredibly dangerous mercenary leader.
-->'''Bailey:''' That's just a fancy way of saying "mind your own damn business".
* ''Franchise/{{Halo}}'':
** In ''VideoGame/Halo2'', a Gunnery Sergeant asks Johnson how he survived the [[VideoGame/HaloCombatEvolved previous game]]. This is a bit of LampshadeHanging for players who are probably wondering the same thing (the reason is given in ''Literature/HaloFirstStrike''.)
-->'''Master Gunnery Sergeant:''' So, Johnson, when you gonna tell me how you made it back home in one piece?
-->'''Sergeant Johnson:''' Sorry, Gunns. It's classified.
-->'''Master Gunnery Sergeant:''' Huh! My ass!
** Defied later in the game, upon seeing a Halo ring Commander Keyes wants information and (rightly) makes it clear she will not tolerate this as an answer.
-->'''Commander Keyes''': I want all the information you've got on the first Halo. Schematics, topography, whatever. I don't care if I have the clearance or not.
-->'''Cortana:''' Yes, ma'am.
** In ''VideoGame/HaloReach'', the dossier of [[PlayerCharacter Noble Six]] is mostly blacked out, according to Carter, though he mentions that ''he'' was able to access even what ONI didn't want him to know. Supplemental material indicates that much of Six's career which was blacked out was their time as a lone wolf assassin who single-handedly took out entire insurgent groups, a test pilot in a top-secret space fighter program, and as a UNSC admiral's "private grim reaper", the latter of which made said admiral reluctant to part with Six until he was all but ''ordered'' to.
* Many of the documents in ''VideoGame/{{Control}}'' have at least one blacked-out word or phrase, usually more.
* ''VideoGame/{{Fahrenheit}}'': Carla receives an e-mail with only the name "Kirsten", when she looks it up in the police database, she discovers it's a classified case file, which she later learns is more connected to her current investigation.
* One of the books you can read in ''VideoGame/TotalDistortion'' is a transcript of dimensionauts that first visited the Distortion Dimension and encountered the [[EvilOverlord Metal Lord]], with a disclaimer at the front explaining that sensitive areas have been blacked out for national security reasons. You can read it in the first place because you paid to be teleported to the same dimension.
* Discussed in Admiral Tianem's storyline in ''VideoGame/ShinGihrensGreed''. After successfully taking the Zeon fortress of Solomon ([[WhatIf in canon, Tianem is killed in action during the battle]]), Tianem is contacted by Earth Federation supreme commander General Revil, who offers his congratulations and explains that with Solomon taken, the Federation's big push Operation Star One can begin. Tianem inquires if that means that General Revil has already selected the "star" in the operation's name (there are 3 possible targets), but while Revil admits he has, he has decided to keep that information to himself for the time being, due to an earlier event where a traitor was leaking information to Zeon's forces. Tianem accepts Revil's reasoning, and assures him he'll reassemble and resupply his forces as quickly as possible so they'll be ready to do their part once Revil decides they now need to know.
* In ''VideoGame/StoriesUntold'', the third chapter, ''The Station Process'' includes a microfilm handbook meant for decoding [[NumberStation number station broadcasts]]. At one point, one of the operators finds the acronym "GCS" among the signals she forwards to you, and a chart at the back of the handbook refers to this, with its meaning and most of the chart redacted. [[spoiler: It actually stands for "Glasgow Coma Scale", a way of measuring the consciousness of a patient, foreshadowing the fact that you, James Aition, were in a [[AllJustADream 2-week coma]] and overheard part of your assessment at some point.]]
[[/folder]]

[[folder:Web Comics]]
* Subverted in ''Webcomic/EveryButtonHurtsTheOtherGuy'' in that much of the information that Fang Mao-Yin deals with ''is'' classified, but this doesn't stop her from absentmindedly letting most of it slip.
* ''Webcomic/GrrlPower'':
** The comic is mostly about a government/military organization which employs people with superpowers. As such, it handles and generates its share of secret information. Unfortunately, not everyone who happens to gain superpowers and who's willing to work for the organization really takes the subject seriously enough -- [[http://www.grrlpowercomic.com/archives/1295 as, for example, here.]]
** ARCHON keeps some of the precise details of its supers secret for tactical reasons. Most of their upper limits (such as speed and strength) are classified, as are some of their powers. Anvil's kinetic absorption is classified (though most people figure it out quickly), Dabbler's alien/demonic origin is classified, and Maxima's ability to shift her stats around is so secret even her own teammates don't know about it. Sydney's comm-ball is doubly classified since telepresence and truthsight are both most useful when the enemy doesn't know about them, and her two unknown orbs are classified so that the team doesn't have to admit they don't know what they do.
* ''Webcomic/{{Nedroid}}'': There is blacked out text in [[http://nedroid.com/2011/06/the-outer-limits/ this]] strip.
[[/folder]]

[[folder:Web Original]]
* ''Website/TheOnion'' parodied this with the article "CIA Realizes It's Been Using Black Highlighters All These Years":
-->[CIA Director] Goss added: "There was probably some really, really important information in these documents."\\
When asked by a reporter if the black ink was meant to intentionally obscure, Goss countered, "Good God, why?"


* ''Website/SCPFoundation'':
** The main wiki does this with [[[ConvenientlyInterruptedDocument REDACTED]]] and ███████, making a situation report read like a list of {{Noodle Incident}}s. In-universe, if you had a higher security clearance level then the software you were using to access the Foundation's database would let you see what's behind all of the redactions. [DATA EXPUNGED] means that the information has been removed from the database entirely, so no one will see it regardless of their clearance level.
** The [[http://www.scp-wiki.net/memetics-and-infohazards-division-orientation Memetics and Infohazards Division]] makes information censor ''itself''. If YouCannotGraspTheTrueForm of the classified material, you don't get the information.
** Also, [[NoSuchAgency there is no Anti-Memetics Division]]. You do not know about it because it does not exist. It's better this way.
* In ''WebOriginal/SheaScientificFilms'', John M. Shea's official patent entries are partially redacted at the printing level; the patent numbers and classifications are hidden using typed dashes.
* ''WebAnimation/RedVsBlue'': CT really doesn't want to share his information. It classified.
-->'''Sarge''': Classified as what?\\
'''CT''': Classified as something I can't tell you, now stop fishing for information!\\
''[beat]''\\
'''Grif''': You can't tell us, or you ''won't'' tell us?\\
'''CT''': I can't tell you... which is convenient, because I don't want to tell you.
* In ''Literature/SimpleComplications'' a few of the main characters ended up discovering some classified information in the second volume, which is beginning to cause major problems for them in the third volume.
[[/folder]]

[[folder:Western Animation]]
* ''WesternAnimation/ThePenguinsOfMadagascar'':
** "Operation: Plush and Cover":
--->'''Skipper:''' I'm waiting for my away team to report before declaring Defcon Red.\\
'''Marlene:''' Uh-huh. Real quick: what's Defcon Red?\\
'''Skipper:''' Classified. Just hope you never live to see one, sister.
** "Otter Gone Wild", after a cage is produced from {{Hammerspace}}:
---> '''King Julien:''' Uh, where did that cage come from?\\
'''Kowalski:''' Sorry, that information is classified.
** Between Agent X and Alice:
--->'''Alice''': X, eh? Is that the name ''your mommy'' gave you?\\
'''X''': Mother never told me [[NoNameGiven my real name]]. Said it was classified.
* ''WesternAnimation/TheGrimAdventuresOfBillyAndMandy'' has the "Junior CIA" school club, which is less than informative about the exact nature of the club, as the representative just says that everything Billy asks is classified information. When Billy manages to guess something right, the agent says HeKnowsTooMuch and Billy is dragged off to be made a member.
[[/folder]]

[[folder:Real Life]]
* The USA has a "compartment" scheme that goes alongside the more familiar scheme of "levels" (unclassified, confidential, secret, top secret). The idea is that there are lots and lots of people who are cleared to know classified information ''in general'', but that doesn't necessarily mean that they should be allowed to see any ''specific'' classified document; there's a much shorter list of people allowed access to each document's "compartment". For instance, there might be a compartment for all documents relating to the shiny new jet fighter that the Air Force is buying, and then sub-compartments for each component. This often goes along with the notion of "need to know", i.e. secrets should only be revealed to people who have an acceptable reason for needing to know about it (the engineers designing the jet fighter's radar probably doesn't need to know about its engines, and vice versa). There's also the sub-classification called NOFORN, which means that anyone who the security rules would classify as a foreigner (such as non-US citizens and US citizens in the employ of a non-US based company) is not permitted to see this information no matter what their clearance level is.
** By Congressional rule, there are, in fact, only four levels of classification allowed, as mentioned above. The compartmentalization system was developed, in part, to get around those restrictions by citing "need-to-know" requirements (also because the more people know a secret, the more likely the secret is to leak).
* In many modern legal systems, courts can order the media not to report certain facts that emerged during cases, such as the identities of witnesses who may be in need of protection - an order known as an injunction. It emerged [[http://en.wikipedia.org/wiki/Injunction#UK_superinjunctions in 2011]] that some English and Welsh courts have been known to order so-called 'super-injunctions', which not only require non-publication of facts of the case but ''also'' suppress the fact that an injunction exists; and at least one 'hyper-injunction', which also forbids discussion of the existence of the injunction with journalists, lawyers, or members of Parliament. At least one such injunction was [[RulesLawyer subverted]] by an MP talking about it in parliament (since he was protected by [[http://en.wikipedia.org/wiki/Parliamentary_privilege "parliamentary privilege"]] and there was nothing stopping the media reporting what he said about the injunction).
** Similarly, telephone and Internet companies may be served with an order to allow the government to access communications and to refrain from disclosing the fact. Some organizations have developed a workaround by posting a [[https://en.wikipedia.org/wiki/Warrant_canary "warrant canary"]] statement that they have not been served with any secret subpoenas, which would be taken down if that situation changed, [[CouldSayItBut implicitly revealing what happened]] in a way that might get around the gag order.
* In the Soviet Union of old, a real classification existed, and is still retained in modern Russia: "Of Special Importance" (Osoboy vazhnosti)l which is more secret than Top Secret.
* There's a variation where information might not be ''classified'', but it might be restricted due to concerns such as privacy. In general, mishandling documents with individual's home addresses, phone numbers, or other personally identifiable details can get you into trouble in many lines of work. And then you get into specialized things like attorney-client-privilege or personal medical information. Leaking any of this information might not be directly harmful to the organization, but it can be very harmful to those individuals, leaving the organization open to financial or legal consequences. A lawyer that breaks attorney-client privilege, for example, can be disbarred, while a doctor that breaks doctor-patient privilege opens themselves up to a massive civil lawsuit.
** ConfessInConfidence works this way too. A Catholic priest is bound to tell ''no one'' -- not police, not lawyers, not even UsefulNotes/ThePope himself -- what the priest has heard in a sacramental confession, under pain of immediate excommunication and possible laicization (dismissal from the priestly state). Needless to say, it is the most serious of SeriousBusiness. There are records of priests being executed when they refused to break the Seal of Confession.
[[/folder]]
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