It was created by hackers from Estonia to redirect internet users to sites with advertisements. The hackers get profits from these ads and so far have earned $14 million dollars from the scam.
The FBI put up a safety net for U.S. computers, but that protection is coming down in July.
ABC 4 shared this information with people in the streets of Salt Lake City to get their response.
"I don't think it's really a big deal. I'm going to say it's over hyped," said Dan Seegmiller.
"Computers stop working on a daily basis that is nothing new," said Jay Vann.
They're not taking it so seriously, but the FBI is warning it can cause problems.
Most users don't know their computers are infected, which is another reason experts like Pete Ashdown who owns XMission says this is a real problem.
"It can be pretty serious. I encourage people to run the latest anti-virus software there is good free stuff out there," Ashdown said.
Click on the attached link to check your computer for this malware.