I bought Norton for online protection yet most of my SPAM COMES FROM NORTON!

MWB:

My inbox is overflowing with SPAM emails purporting to be from NORTON! They say URGENT and claim that i have been hacked and/or that my subscription Norton LifeLock 360 has expired etc. etc. Most have a return email address incorporating “constant contact” ...

Hi MWB:

Just an FYI that my local PBS station uses Constant Contact to manage some of their email campaigns.

I don't know if NortonLifeLock has started using Constant Contact for certain types of marketing emails (you'd have to check with NortonLifeLock customer support via Live Chat at https://www.norton.com/chat to be sure),  but the email domains they normally use are listed in the NortonLifeLock support article Verify That An Email You Receive From Norton is Legitimate.

Regardless, you might want to log in to your Norton Account at https://my.norton.com/account/subscriptions, click on the Account Settings tab, and opt out of emails from NortonLifeLock under Email Preferences (note that it will take at least two or three week for this opt out to take effect).  Unfortunately, there is a caveat there that states "We will continue to send you information relating to your orders, account updates, subscription renewal, and important security alerts regardless of this setting.", and almost every spam email that NortonLifeLock sends out these days is classified  as "an important security alert."