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The work came out no later than the 1990s (maybe sooner). I also remember that the guy was doing something enthusiastically on the computer: at first he was typing without looking at the screen, but the message on the computer monitor made him do his work more slowly and carefully. The phrases went something like this. The message on the computer screen made him work more carefully. There was a man standing at the desk, a gun in his hand. The guy had never seen a real gun except in movies, but he knew right away what it was. The guy's hand mechanically fell on the Enter button and that second the black muzzle of the gun burst into flames, ending his life.
I am looking for a work that seems to be either a detective or a political or spy thriller. I only remember the beginning of the piece. A guy found a derelict computer, sat down at it and started to do something, and then he saw a man with a gun walk up to the desk, the guy automatically pressed the enter button and the man shot him back. The work came out in the 1990s.