Computer security

A customer holds Webroot's SecureAnywhere Complete 2012 software for computer security at Best Buy in Mountain View, Calif., Friday. Despite repeated alerts, tens of thousands of Americans might lose their Internet service Monday unless they do a quick check of their computers for malware that could have taken over their machines more than a year ago. The warnings about the Internet problem have been splashed across Facebook and Google. Internet service providers have sent notices, and the FBI set up a special website.

July 8, 2012