It was at the Securedrop website. How did I end up there ? I read something about Sequoia and encryption and then wanted to see what Securedrop entailed.
Meanwhile I’ve raised the security settings. Still, today someone in this community (?) mentioned that Tor browser does not protect the remote to check for the OS, and now this. Color me surprised.
Tor browser useragent string pretends to be Windows on all platforms. CreepJS detects Linux in my case. A commenter mentions that Tor browser does not protect OS detection. That gives me mixed feelings about the goals of Tor browser.
There are many things you can do with JavaScript, and tor can only protect against so many without completely breaking many sites. Set your slider all the way to maximum and it will no longer detect windows, but it will very likely also no longer run.