For some time now, I've been finding an entity named "_wamtcstandards" in my cookies and local/session storage. What is its purpose? Where does it come from? The stored value seems to be a hashed or encrypted value that might be unique and possibly personally identifiable. When deleted, it will be replaced.
It might be some extension you have installed, at least that's what I found searching the cookie name on GitHub: <a href="https://github.com/snyderp/web-api-manager/blob/edde693ba53fa3484087abf610bfb76742abe066/add-on/lib/init.js" rel="nofollow">https://github.com/snyderp/web-api-manager/blob/edde693ba53f...</a>