LATEST ATTACK: The international hacking group Anonymous says it attacked several government websites in China in an apparent protest against Chinese Internet restrictions.
ABOUT THE GROUP: Activists have defaced websites around the world. They are engaged in political causes, including opposition to the global clampdown on file-sharing sites and defense of the secret-spilling site WikiLeaks.
STATUS: Some of the Chinese sites were still inaccessible Thursday. Others that Anonymous said it attacked were working Thursday, and government officials denied the sites were ever hacked.