Link shorteners and redirectors, especially new and lesser-known ones tend to get caught in the fray with things like Google Safe Browsing (which FF uses as well) and Smart Screen.

It's because the original/shortened link gets reported and not the real/destination site. Then the domain (of the shortener/redirector) gets flagged, instead of the real site.

This happened to me at work this very week, with a redirector service that's a part of our email security stack. FF and Chrome were both blocking links that were safe, because the redirector service itself was classified as sus.

[–] user224@lemmy.sdf.org 5 points 1 day ago (1 children)

Firefox on Android doesn't even have the "ignore" option :(

[–] myserverisdown@lemmy.world 5 points 1 day ago (1 children)

Pretty sure its under a more info dropdown

[–] user224@lemmy.sdf.org 1 points 8 hours ago* (last edited 8 hours ago)

I didn't have that, but I use Firefox Nightly.
And I also just found I can no-problem go to https://revoked.grc.com/ 😬
So it doesn't even check for revoked certificates (but at least Fennec does).