The hacking group Anonymous claimed a new series of hacks against the U.S. Federal Trade Commission and consumer rights websites, AP reported.

The loosely organized collection of cyber rebels said it attacked the FTC's consumer protection business center and the National Consumer Protection Week websites.

Both sites were replaced with a violent German-language video satirizing the Anti-Counterfeiting Trade Agreement, or ACTA.

ACTA was recently signed by several countries, but restrictions on online piracy have prompted a growing protest movement.

A call to the Trade Commission rang unanswered before business hours Friday, Feb 17. An email seeking comment was not immediately returned.

The organization's main home page appeared unaffected by the attacks.