Hacker group the Syrian Electronic Army has claimed credit for the Twitter and Huffington Post hacks in a series of Twitter messages.
US Defense Secretary Chuck Hagel has accused China of waging cyber espionage against the United States.
Hackers took over news agency Associated Press's Twitter account and sent a false tweet about the US president that briefly sent US markets reeling.
Accusations by a US computer company that a secretive Chinese military unit is likely behind a series of hacking attacks are unreliable, says China.
Burger King's Twitter account was hacked apparently by hackers from Anonymous who took it over and rebranded it with rival McDonald's logo and name.
A legal review has concluded that the US president can order pre-emptive cyberstrikes if the country finds evidence of a digital attack against it.
Anonymous SA has condemned hacks by GhostShell, saying its plan to "rid South Africa of corruption" was not the same as that of the latest group's.
The semi-notorious group associated with hacktivists Anonymous has threatened to hack government sites and reveal sensitive information.
A hacker has claimed responsibility for disrupting three South African government websites.
Jon Tullett shares some online security tricks that will keep the web wolves from your door.
McAfee says it has found the biggest series of cyberattacks to date involving the infiltration of the networks of 72 organisations, including the UN.
Hacker group LulzSec gained notoriety when it attacked the CIA. Ryan Gallagher talks to one of its founders.
Not by land, air, sea or space but on the internet. Hackers are plotting to attack in more sophisticated ways than you realise.
The hunt for hackers believed to have staged attacks on websites ranging from law enforcement bodies to Sony has led to the arrest of a teenager.
The public website of the US Central Intelligence Agency went down on Wednesday as the hacker group Lulz Security said it had launched an attack.
The "Lulz Security" hacker group is flaunting its notoriety with a telephone hotline for people to call to suggest targets for cyber attacks.
The FBI and United States secret service have used the threat of prison to create an army of informers among online criminals.
The ANCYL's website gets hacked, an electric car company wants to sue Top Gear, and Indonesia considers underground nuclear facilities.
Hackers repeatedly entered the network of the company that runs the Nasdaq stock market in the past year, but the platform was not compromised.
What happens when your website isn't as secure as you thought it was? The M&G found out the hard way.