Continuity mistake: When we first see the interview room with Axel Torvalds in, a detective is standing behind him and his lawyer. He then goes to lean on the desk with one hand remaining on his hip. In the next shot he's put both hands on the table. (00:18:10)
Continuity mistake: When Stanley is hitting golf balls from the top of his trailer, we see a close-up of his left hand placing the ball on the tee. In the next shot, he's still leaning down, but now it's his right hand which has been placing the ball.
Continuity mistake: During the scene in the nightclub where John Travolta first tells Hugh Jackman to hack entry in 60 seconds instead of 60 minutes, Vinne Jones is holding a gun to Hugh's head. As the shot switches back & forth during the scene, you see Vinnie is holding the gun two handed in 1 shot, & single handed in the other. This is repeated a few times as the shot changes.
Continuity mistake: When Torvalds is alone with Roberts, there is a shot of Roberts saying "I shot a suspect in the hand" with his tie out of the coat. Two shots later when he says "Do you know how difficult?" his tie is inside the coat.
Revealing mistake: At the end of the car chase scene between the TVR and the SUVs, the last SUV crashes into a wall, explodes and flips over into a diner. During the explosion you can see a piston pushing the car over.
Factual error: Early in the film they cut to a scene with the title Washington D. C. and you can see in a long shot the very distinctive building "The Bonaventure Hotel" which is in downtown Los Angeles. This building is one of a kind and there are no buildings like this in Washington DC. Also the buildings in the long shots of this scene are high rises. So even if you don't know the uniqueness of the hotel a lot of people do know that Washington DC does not have such tall buildings because of height restrictions.
Factual error: Jackman's character states that he will hack into the government's network using an old PDP-10. The command line interface for a PDP-10 should be shown on the monitors. None of the shots of the monitors in the movie show a PDP-10 command line.
Continuity mistake: When Stanley has to hack in the computer for the first time in one minute with the gun on his head, Gabriël says he has one minute. But it is much longer than just one minute.
Factual error: Some of the IP address listed during his cyber hack are not real IP address (ie. 293.*.*.*) The highest possible number is 255. This was done for the same reason that movies use 555- for phone numbers: to prevent enthusiastic moviegoers from actually reaching any real person or entity.
Continuity mistake: Just after Hugh drops off his daughter, a cop gets into the car. Hugh then reverses, hits Don's car damaging the passenger door and smashing the glass. Then they tumble down the cliff, but when Hugh slams into the car at the bottom of the cliff, the door and glass are intact.
Visible crew/equipment: When Gabriel and Stan make the deal he's sitting at the computer and he swivels round to face the screens. When he's taking his jacket off look to the upper right part of the screen. The boom mic is just poking down far enough to be seen and wobbles continually. (00:36:05)
Continuity mistake: During one of the two explosion scenes you can clearly see the wire that is used to keep the bonnet (and boot) from flying off too far.
Continuity mistake: When the car stops at the bottom of the hill that the three blokes have fallen down, its a dusty blue colour, camera pans away, returns, and it changes to a nicely polished dark car. (00:44:27)