NBC 10: Note to users

The company that hosts says a pop-up ad that looked like a virus alert infiltrated its system.

If you're a user of and you happened to see the ad, rest assured it wasn't a real virus alert.

If you did see the ad, the company says you should close your tabs, clear your Internet browser's cache and cookies, and then restart your computer.

The company suggests you should run your anti-virus software just to be safe.