Twunt
I think the title sums it up...
A French hacker who boasted of breaking into the systems of a government security contractor on national television has suffered some unsurprising consequences. The alleged miscreant, identified only as Carl, appeared on a programme called Complément d'enquête (Further Investigation) to demonstrate how he broke into the …
... make sure there's no way on Earth anyone can find evidence against you.
"recovered credit card and bank account data from his computer"
1. That just makes him a common thief, not a hacker.
2. The thing about Anonymous is well, you know, they are anonymous ...
3. wtf - never heard of encryption? Your most sensitive operations should be running on portable computers with read-only OS on removable media (no HDD) or at least OS-encrypted (e.g. Bitlocker/FileVault) boot HD volume, encrypted (e.g. multiple Truecrypt/Axcrypt/Bestcrypt) removable media for your most sensitive data, like easily swallowed SD cards, and Predator/usb-key locked screens if you walk away from the machine for any reason. All passwords should be different with 20+ chars with random characters. One should not use excerpts or modifications of publically printed press since it is well known government agencies have swallowed entire national libraries whole, e.g. US Library of Congress (including multiple languages).
Looks like Darwin wins again: one less wannabe polluting the pool!