Sony said it had found a "large amount" of unauthorized sign-in attempts on its PlayStation Network and other online entertainment services, and that it has temporarily suspended about 93,000 user accounts for those services.

The State Department late issued a worldwide travel alert for U.S. citizens, warning of the potential for anti-U.S. action after the United States accused Iran of backing a plot to kill Saudi Arabia's ambassador to Washington.

The U.S. Transportation Security Administration said that it will no longer require all air cargo bound for the U.S. to be screened by the end of the year.

The White House has issued an executive order revamping computer security policies to prevent classified documents from being linked to the Internet.

Bank tellers, restaurant workers and other service employees in New York lifted credit card data from foreign tourists and residents as part of an identity theft ring that stretched to China, Europe and the Middle East and victimized thousands.

Tampa, Fla. has five surveillance cameras watching traffic downtown, but next year's Republican National Convention could bring hundreds more on the street and in the sky.

One of the world's leading online gambling websites, Betfair, admitted last week that the personal account details of more than 3 million of its players was hacked in early 2010. Now, Betfair's Director of Security, Sean Catlett, has resigned.

U.S. utilities and industries face a rising number of cyber break-ins by attackers using more sophisticated methods, says a Washington Post report.

A man was arrested this week and accused of plotting an assault on the Pentagon and U.S. Capitol using remote-controlled aircraft armed with explosives.