DownForEveryoneOrJustMe.com is reporting the department's site as universally nuked, and an Anonymous-affiliated Twitter account is boasting success. This is almost certainly the result of a quickly-assembled DDoS attack—and easily the widest in scope and ferocity we've seen in some time. If you had any doubts Anonymous is still a hacker wrecking ball, doubt no more.
The combination of the hacking nebula's SOPA animosity—they've been a vocal opponent of the bill since its inception—combined with today's sudden Megaupload news has made the group bubble over: hundreds upon hundreds of Anon operatives are in a plotting frenzy, chatting about which site will go down next. In Anon's eyes, the government and media interests are responsible for the undue destruction of Megaupload (and the arrest of four of its operators), so it'll be exactly those entities that're feeling the pain right now. Pretty much every company that makes movies, TV, or music, along with the entirety of the federal government, is in Anonymous' crosshairs.
Update: Anonymous says they've also knocked off the RIAA's site—looks down for us at the moment as well.
Update 2: Universal Music Group has also fallen off an e-cliff.
Update 3: Goodbye for now, MPAA.org.
Update 4: Affected sites are bouncing in and out of life, and are at the very least super slow to load. Anon agents are currently trying to coordinate their DDoS attacks in the same direction via IRC.
Update 5: The US Copyright Office joins the list.
Update 6: This Anon sums up the mood in their "official" chat room at the moment:
Danzu: STOP EVERYTHING, who are we DoSing right now?
Update 7: Russian news service RT claims this is the largest coordinated attack in Anonymous' history—over 5,600 DDoS zealots blasting at once.
Update 8: the Anonymous DDoS planning committee is chittering so quickly, it's making my laptop fan spin.
Update 9: Major record label EMI is down for the count.
Update 10: La résistance est international—French copyright authority HADOPI bites the dust under Anon pressure.
Update 11: The Federal Bureau of Investigation has fallen and can't get up.
Update 12: Anonymous has released a statement about today's attacks.