Anonymous Group taken down several Greek government websites, on the eve of a visit by German Chancellor Angela Merkel. Hackers Hack several sites including those of the Citizens Protection Ministry, the police and the Ministry of Justice. A message appeared saying: "The page cannot be found".
In a message posted on YouTube, Anonymous criticized the huge security operation that police plan for Tuesday to contain protests against Merkel, comparing the government to the military junta that ruled Greece from 1967 to 1974.
Police could not confirm who was responsible for the attack, which Anonymous claimed in a series of Tweets on the social media site Twitter.
Trade unions and opposition political parties have called for mass protests to greet the German chancellor, whom many Greeks accuse of unfairly forcing them down the path of painful austerity and driving the country even deeper into recession.