Since ~2005 all EU countries have Electronic Signature legislation (1999/93/EC), later renewed as eIDAS (Regulation 910/2014).
It's 2021, companies are still scammed by fake PDF pretending to be an order by a German court, notable judiciary institution, sent with *no* digital signature at all, in a industry where these attacks are frequent π€·
100% agree but I still believe this is doable and not *that* hard on the UI level - browser vendors eventually managed to create a convincing UI for cert validation failures. The problem is that nobody is really expected to ignore unsigned PDFs sent by scammers to registrars.
@kravietz
Not only unsigned...
The browser should make a priority to push the signature into the user's face every time the file is opened. Otherwise, any signature will do to even prety experienced users.