The deadly twisters that ripped through Kansas this week and the historic floods sweeping across the Upper Midwest will soon give rise to donation scams and malicious attacks, the SANS Storm Center warned on Friday.

Phishing attacks that target high-value assets are increasing, according to researchers at Verisign's iDefense Labs. During the past year, waves of attacks have risen from three or four a month to as many as 10 per month.

Researchers are tracking a new and more sophisticated take on an old trojan that encrypts files on a victim's computer and then demands a payment in exchange for the keys.

Expect more malware, unwelcome email, and social engineering threats as the summer begins.

Spammers are increasingly turning to hosted services to ship out their junk mail, the latest threat report from MessageLabs revealed.

The Federal Trade Commission has put a permanent halt to an operation that allegedly obtained consumers' confidential phone records without their knowledge or consent, and then sold them to third parties, according to a statement by the FTC.

U.S. authorities are investigating whether Chinese officials secretly copied information from U.S. Secretary of Commerce Carlos Gutierrez's laptop and then tried to hack into Commerce Department computers.

Apple's increasing popularity is leading to the company's users being targeted by phishing schemes.

Three vulnerabilities in Apple's iCal personal calendar application could enable remote attackers to install malicious code on victim's machines.

The recent natural disasters in China and Myanmar have led to scams to steal money intended for donations.