For computer users, a few mouse clicks  could mean the difference between staying online and losing Internet connections  this summer.

Unknown to most of them, their problem began when international hackers ran  an online advertising scam to take control of infected computers around the  world. In a highly unusual response, the FBI set up a safety net months ago  using government computers to prevent Internet disruptions for those infected  users. But that system is to be shut down.

The FBI is encouraging users to visit a website run by its security partner, www.dcwg.org, that will inform them whether  they’re infected and explain how to fix the problem. After July 9, infected  users won’t be able to connect to the Internet.

Most victims don’t even know their computers have been infected, although the  malicious software probably has slowed their web surfing and disabled their  antivirus software, making their machines more vulnerable to other problems. More Here.