Operation Payback: is SOCA victim of Anonymous anger over Pirate Bay block?

The Serious Organised Crime Agency (SOCA) website remains offline after being hit by a Distributed Denial of Service (DDoS) attack for the second time in the space of a year. Last June it was the hacktivist group LulzSec which claimed responsibility; this time nobody has yet come forward to admit they did it and explain why. However, it seems likely that hacking collective Anonymous could be behind the strike in protest over the decision of the UK's High Court to order all Internet Service Providers to block access to The Pirate Bay.