Looks like Norton 360 now gives you the option to mine cryptocurrency:FAQ: Norton Crypto | Norton Community
At least it doesn't appear to be turned on by default.
Interesting idea but taking a 15% cut for essentially not doing a thing seems steep. I guess they're perhaps looking at people that have no idea how mining works. I wouldn't want norton holding the keys so to speak.
Brian Krebs take on this:
Norton 360 Now Comes With a Cryptominer – Krebs on Security