Computer hacking group Anoynmous has launched a cyber-attack on the Greek Ministry of Justice website, Greek police have confirmed. Daily Mail reported.

The hack was apparently a protest against the Greek Government's signing of the Anti-Counterfeiting Trade Agreement (ACTA), which is designed to reduce internet piracy.

In a message, the group threatened to take down over 300 media and ministry sites unless the Government retracts its support for the global treaty.

Greek police said via Twitter that their cyber-crime division had already begun an investigation into the Ministry of Justice attack. The hacking group also released a video, claiming that Greece's decision to join the International Monetary Fund (IMF) will 'introduce a new dictatorship upon your people’s shoulders and allowed the bankers and the monarchs of the EU to enslave them both economically and politically.'