Erasing power eraser

I am getting a SECURITY REQUEST message every 5 minutes or so advising of out bound traffic and recommending running Norton Power Eraser.  I have done so 4 times and run full system scan.  Nothing detected.  Have also checked internet out bound traffic and appears normal.  This message accumulates so after a number of hours I have 20 or more to delete.   What is wrong and how do I stop it?