Krusty13 created this interesting thread: https://community.norton.com/en/forums/optional-update-kb3035583 after which I uninstalled the KB.
It's back again - must have sneaked in with the other 24 updates for August, so I've again uninstalled it.
Now I'm being bombarded every 30 minutes with a prompt to allow Ask to make changes. I neither need, like or want Ask so I'll find out what I need to do to get rid of that.
And my good friend Bing is back - I've deleted that probably six or seven times and I've no idea how it's got back - Adobe is one of the suspects but I'm always very careful when I download their updates.
But at least all these p-i-t-a programs have taught me a new word - Nagware.
This was the first article I went to after a Norton search, but there were several other interesting ones: