There's the desktop app that can be used with Firefox, but extension itself, only Chrome and Edge have it. Firefox's extension has been removed for some reason, but you can use it with the desktop app which affects all web traffic on your Windows, not just the browser.
It logs and collects data (urls, device details, ads you clicked on, size of your ****) as explained in here:
You must be registered to see the links
It can't know the passwords you type unless it's become an actual piece of malware with a keylogger, like explained in here:
https://f95zone.to/threads/dlsite-j...-from-overseas-x-twitter.246342/post-16843441