It’s a hacker movie presented in real-time, but ultimately lacks depth. I frequently found myself questioning the choices made throughout the film. The storyline isn't particularly strong, and most of the performances are underwhelming. While there are some visually interesting moments, they aren’t enough to compensate for its numerous shortcomings. Even Elijah Wood, who is typically reliable, appears unengaged. I understand the appeal of a real-time format, and appreciate what the filmmakers were trying to achieve with their approach; however, a film still has to be well-made regardless of any stylistic choices. This one simply isn't. 4/10

Source on TMDB