Posted: Jul 5, 2012 4:58 PM by CBS News
Updated: Jul 6, 2012 7:08 AM
Millions of Internet users may be at risk for losing their online access on July 9 if their machines are infected with the DNSChanger virus.
The DNS virus works by turning off virus updates and redirecting surfers to fraudulent web sites. Last year, the FBI took over the malwares' servers and converted them to regular servers. But the FBI announced it will shut down those servers Monday, so internet users need to find out if they have this virus.
The Better Business Bureau is urging computer owners to run a simple diagnostic test to see if they are affected.
Coleen Smith, with the Better Business Bureau, said most people don't know their computers are infected. "So if you just go to the website on there and just click on it, it will just do a quick verification, it doesn't download anything, it doesn't scan your computer, it just verifies that you are actually going to the website that it says that it's going to."
If your computer is infected, the DNS Changer Working Group recommends visiting DCWG.org to learn how to fix it. Google and Facebook announced they will display notices to users with the malware, according to DCWG.
Last November, the FBI managed to take down international hackers operating out of Estonia that had already successfully uploaded malware onto more than a half a million computers.