The Zero Cool reveal
Just an observation, and not a criticism, but like in all movies, you have to accept not everything "makes sense."
My favorite in Hackers is when Dade reveals himself to be Zero Cool. His friends, the hackers, have access to information from all over the world, know and love hacker culture, and remember Zero Cool as the little kid hacker genius... but no one remembered his actual name. Even though he's now in their high school.
This movie continues to be super cool 21 years later and is always watchable.