President Barack Obama entered the fray Wednesday on cyber attacks from China, saying some intrusions affecting U.S. firms and infrastructure were "state sponsored."

The comments appeared to step up the rhetoric against China following similar remarks from other members of the U.S. administration.

Most American teenagers use their phones to access the Internet, with one-fourth of them going online mostly on their mobile device, a survey showed Wednesday.

Some 78 percent of U.S. teens have a cell phone, and 47 percent of those own smartphones, according to the survey by the Pew Internet Project with Harvard's Berkman Center for Internet & Society.

Trying out a new spa in Kabul, testing the latest spiky hairstyles and swapping gossip -- Afghanistan's first Internet TV station tackles subjects that the mainstream channels prefer to ignore.

Globox.tv is the latest product of a media revolution in Afghanistan since the fall of the Taliban regime -- which banned television, music and cinema -- and the station's bosses hope its bold programs will attract younger viewers.

China has expressed a willingness to cooperate with the United States and others to combat hacking, after a top U.S. official warned the international community was losing patience with Beijing.

Foreign ministry spokeswoman Hua Chunying, while reiterating China's position that it is a victim of attacks in cyberspace, said Beijing was in favor of global cooperation on the issue.

Groups representing U.S. authors and publishers called Monday on the Internet Corporation for Assigned Names and Numbers to deny online retailer Amazon exclusive rights to websites ending with .book, .author, or .read.

ICANN is considering nearly two thousand requests for new web address endings, ranging from the general (.shop) to the highly specialized (.motorcycles).

The hugely popular SimCity game is rapidly recovering from its trouble-plagued launch but problems are yet to be completely eradicated, company officials said.

Electronic Arts servers hosting SimCity online play were overwhelmed after the California company released its Maxis Studio game on March 5, and problems continued through the weekend.

Career-focused social network LinkedIn is buying the news reading app-maker Pulse in a deal valued at between $50 million and $100 million, according to technology website All Things Digital.

LinkedIn would not comment on what it referred to as "rumor or speculation."

Syria, China, Iran, Bahrain and Vietnam are flagrantly spying online, media watchdog RSF said Tuesday, urging controls on the export of Internet surveillance tools to regimes clamping down on dissent.

A new report entitled "Enemies of the Internet" also singled out five companies -- Gamma, Trovicor, Hacking Team, Amesys and Blue Coat -- that it branded "digital era mercenaries," who were helping oppressive governments.

Those Facebook 'likes' can reveal a lot more than you think.

Research released Monday shows patterns from these Facebook preferences can provide surprisingly accurate estimates of the user's race, age, IQ, sexuality and other personal information.

Corporate raider Carl Icahn said Monday his investment firm had entered into a confidentiality agreement with Dell, which is facing a battle over its plans to take the computer maker private.

The agreement will allow Icahn access to detailed financial information which is not publicly available.