Why doesn't Norton Security and/or Norton Power Eraser protect me from the guttingly annoying 'brought by shopping deals' banner ads? - my preferred browser is Chrome
The Norton products do not usually go after PUP's--potentially Unwanted Programs. They concentrate on preventing malware from damaging your computer. I would suggest that you visit one of the free malware removal sites. They will help you to safely remove the malware.
Please see this link for an up to date description of these sites plus the addition of a newly listed site formed by one of our successful malware remover users. The new site is listed first in this link.https://community.norton.com/en/forums/malware-removal-forum-recommendations
Please stay with them until your computer is declared as cleaned up.
Please come back and let us know how you made out.