WASHINGTON, D.C. (AP) -- A new computer virus is the first ever to infect picture files, an anti-virus firm reported Thursday, making sharing family photos on the Internet a potentially dangerous ...

A new virus threatens to strike one of the Internet’s most common and useful activities: sharing family photos. The malicious program, the first to infect picture files, is not attacking computers.

There's a lot to learn about image files on the command line, from verifying file format to finding out where and when photos were taken and maybe even getting an unusual view of what they look like.

"Our concern is more for what might be coming," says Vincent Gullotto, head antivirus researcher at McAfee Security, which produces top-selling antivirus software. "Potentially no file type could be ...