There has been a visible increase in hacking attacks after Anonymous made an announcement on Feb. 10, warning the world at large to expect attacks every Friday.

"Each and every Friday Anonymous will be launching attacks... with the specific purpose of wiping as many corrupt corporate and government systems off our internet," the statement on the Web site said.

The fighters for internet freedom have, in the recent past, hacked into a privately run prison in the United States, Greece's Judicial System, Syrian President Bashar al-Assad's e- mail account and many more strictly protected private and public Web sites.

Anonymous Promises Hack Attacks Every Friday!
A message on the groups blog displays an image suggesting attacks every Friday.

The threat they pose has so disturbed the established order that American National Security Agency Director, General Keith Alexander, on Feb. 21, declared Anonymous was a threat to national security, expressing concerns the hacker group could look at attacking the power grid in America.

Tweets accepting hacks: Anonymous
Hacker group at ease hacking private and public websites. Twitter