Hacking group takes credit for attack on U.S. Department of Justice's website.

The hactivist organization known as Anonymous is claiming it's the one responsible for infiltrating the U.S. Department of Justice's Sentencing Commission website (www.ussc.gov) over the weekend. This latest attack was in retaliation to the government's attempt to prosecute Aaron Swartz for illegally downloading millions of academic journals from JSTOR, an online archive and journal distribution service.

Though it's been relatively quiet lately, the high profile hacking organization known as Lulz Security (LulzSec) spent much of last summer stirring up trouble on the Internet, often times at the expense of innocent users who happened to be customers of whichever organization the cyber scoundrels were targeting. The FBI hasn't forgotten about all the illegal activity that took place, and related to the infamous Sony breach, federal authorities arrested a second suspected LulzSec member in the U.S.

Misery loves company, though that probably won't come as much consolation to social networking site LinkedIn, which is now joined by at least two other sites that suffered a serious security breach at the hands of the same band of hackers. Both Last.fm and eHarmony issued separate statements confirming that some user passwords may have been compromised in the recent hacker attack.