McAfee says it has found the biggest series of cyberattacks to date involving the infiltration of the networks of 72 organisations, including the UN.
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.
A virus targeting smart phones in China running Google's Android operating system may represent the most sophisticated bug to target mobile devices.
Cybercrime is rapidly spreading on Facebook as hackers prey on users who think the world's top social networking site is a safe haven on the internet.
Hackers launched an attack on Facebook's 200-million users on Thursday, successfully gathering passwords from some of them.
A computer developed for the world's poor children, dubbed "the $100 laptop", has reached a milestone: It is now selling for $200. The One Laptop per Child Foundation, founded by MIT Professor Nicholas Negroponte, has started offering the lime-green-and-white machines in lots of 10 000 or more for $200 apiece on its website.