I use Commodo Anti and firewall.
I get this pop up about every 20-30 minutes…
http://files.abovetopsecret.com/files/img/dy4e90f080.PNG
Also, it could be a false positive. You can report it as such here and they’ll let you know if it is a legitimate threat or not.
However, if you wish to find out what it is yourself you can check out the methods described here and let us know what you find.