ya about computer kid, sci-fi or dystopian

[Kathleen]

Teenager, possibly computer hacker, got in shit

Main character might be named Tobias, definitely had long dark hair

Just remember him getting chased through suburban subdivision construction site, hiding in a house and falling through the floor

[Emily]

sounds a little like the "One of us is lying," "One of us is next" series

[Kathleen]

That one came out later I think.

[Becca]

Roughly what year did you read the book you're looking for?

[Kathleen]

Between 2002 and 2004

[Lobstergirl, au gratin]

Your topic header is too vague - please add more plot details. There are thousands of novels with these aspects !