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The hackers also claim they attacked Britain’s Ministry of Justice website Saturday night and warned of further attacks every Saturday to come on U.K. government websites.

The purported hackers - who claim ties to Anonymous, the hacker collective - said on Twitter they launched Saturday’s denial-of-service attacks and brought down the websites to protest “proposed draconian surveillance measures,” Britain’s extradition policies and “derogation of civil liberties.”

The authenticity of their claims could not be verified. Denial-of-service attacks, which flood websites with too much traffic, are relatively easy to pull off and generally do no lasting damage.

From wire dispatches and staff reports