EDGE Los Angeles

Additional arrests were made on Mar. 21 in the murders of David Rangel, one of three gay men killed in Queens over the course of the past two months.

No criminal charges will be filed against a suburban Philadelphia school district that secretly snapped tens of thousands of webcam photographs and screen shots on laptops issued to students.

Computer hackers have begun targeting power plants and other critical operations around the world in bold new efforts to seize control of them, setting off a scramble to shore up aging, vulnerable systems.

Brazilian police dismantled a kidnapping ring that scoured social-networking sites for victims who appeared to be wealthy, then used profile information to track them to their jobs or favorite bars or clubs.

Researchers have uncovered new ways that criminals can spy on Internet users even if they’re using secure connections to banks, online retailers or other sensitive Web sites.

Facebook’s millions of users are a lucrative target for Internet criminals looking to steal passwords and more. To combat malicious attacks, phishing scams and spam, the online social network is rolling out new security features.

When hackers a continent away attack a military computer system, using computers belonging to unsuspecting private citizens or businesses as cover, what are the rules when the U.S. fights back?

Link-shortening services such as TinyURL seem ideal for criminals because they can disguise the names of malicious sites. Yet on Twitter - one of the most popular places for them - they may not be nearly as malicious as many industry experts fear, according to new security research.

"I’m a nice hacker," suspected Twitter infiltrator Francois Cousteix told France 3 television Thursday, a day after he was released from police questioning, adding that his goal was to warn Internet users about data security.

A computer hacker from Miami who orchestrated one of the largest theft of credit and debit card numbers in U.S. history was sentenced Thursday to 20 years in prison.