https://mullvad.net/en/help/install-mullvad-app-linux
Trying to install VPN and these are the instructions Mullvad is giving me. This is ridiculous. There must be a more simple way. I know how to follow the instructions but I have no idea what I’m doing here. Can’t I just download a file and install it? I’m on Ubuntu.
What are you on about? If you are using the 3rd party repo, you are just as likely to get malware than if you download the deb directly from the wbsite. Its literally the same thing, just adding the repo means that the malware could get installed automatically and without you knowing where it came from.
No, you’re confusing two vectors of attack. I’m saying that if you fan trust the vendor, then you’re still at risk from downloading malicious software that was manipulated between the vendor and you (man in the middle attack), unless you verified a signature using a key stores offline (note https is still vulnerable because the keys are stored online)
Not untrue, and I don’t think that the possibility should be glossed over, but honestly, what do you think is more likely: this specific person getting specifically MitM’ed by a bad actor, or a bad actor taking control of a repo that hundreds of people blindly trust. I have a sneaking suspicion that OP’s threat model isn’t sophisticated enough to need to really, truly, be worrying about that.