Today, while idly glancing at my expansive list of Firefox addons, I saw something called "Shield Recipe Client" that I do not remember installing - or even hearing about.
A quick web search gave me nothing useful - a few conversations about viruses that may or may not have had any relevance at all, a Mozilla wiki page that told me it was likely a thing but told me nothing about what it did, and some stuff in languages other than English - and I know useful search results are running out when I see languages other than English.
I attempted to disable the addon, but nothing happened. Going back to the addons list, it had disappeared entirely. Not a trace of it, disabled or not.
What is this thing? Is it still there? Should I start wearing a tinfoil hat and/or nuke the machine from orbit?