Hacker group Anonymous released a trove of military email addresses and passwords it claimed to have plundered from the network of US defense consulting firm Booz Allen Hamilton.
Hacker group Anonymous blocked the official website of Argentina's National Institute of Statistics and Census amid an international stand-off over claims the country has lied about its economy.
A hacker group on Wednesday brazenly ramped up its antics as unrelenting waves of cyberattacks expose how poorly defended many networks are against Internet marauders.
The Federal Reserve acknowledged Wednesday its computer systems were accessed by hackers but said the incident did not affect the central bank's "critical operations."
The hacker group known as Anonymous on Thursday posted credit card numbers in retaliation for what it claimed was an FBI raid arresting one of its members.
Members of the hacker group Anonymous defaced the website on Friday of the law firm that defended a US Marine who faced charges in connection with the 2005 killing of 24 Iraqi civilians.
About 80 masked people, calling themselves allies of the global hacker group Anonymous, picked up litter in Tokyo Saturday in a novel protest against Japan's tougher laws against illegal downloads.
An Islamist group on Tuesday said it will carry out new cyber attacks on US banking targets, according to SITE Intelligence Group, following similar attacks last week in response to an anti-Islam film.
The US National Weather Service computer network was hacked this week, with a group from Kosovo claiming credit and posting sensitive data, security experts said Friday.
The FBI on Tuesday disputed a computer hacker group's claim that it stole personal identification data on millions of Apple device owners from an FBI agent's laptop.