Seriously, how stupid are some people?
If you are Lagana, and you're tech savvy, and you are leaking info, wouldn't you know that disinformation is the easiest way to catch a rat?
Secondly, wouldn't you find it a little odd that all of a sudden you all get new laptops and phones after you've been accused of leaking shit? Besides, if he was that savvy, he'd just wipe the HD with a program like WipeDrive, and then reinstall XP Pro (most likely) back onto it.
A great shot is when you pull it off. A smart shot is when you don't have the guts to try.