Yeah, like I said it was probably my security software. I will say that the link did not go to Amazon. It went to a site that was blocked. So at the very least it was a click tracking thing. Maybe harmless, but not something I'm going to disable security for. Not when I can just go straight to Amazon and get a direct link with no tracking or affiliation.

Affiliate codes end with ?= and some code and do not flag my security software. So they wanted to monetise the click beyond the affiliate link.