Avast, Eset, or Malwarebytes. Have you tried Ctrl + Alt + Delete, Find the process called panzilla.exe read the description to find out what it is then end the task and search for it on your computer to delete it.
It just happened again. And said something was wrong with Gomez. I uninstalled it. Max, take my name off the Gomezpeer thing.
Yeah it's most likely gomez, check this: http://www.gomezpeerzone.com/panzilla-security-alert-explained/