Hey,
Proton Pass is open source and has now passed an independent security audit (by Cure53). The Android and iOS apps source code can be found here, the browser extensions source code for Firefox and Chrome-based browsers (including Edge) can be found here.
Proton has also completed an independent security audit conducted by Cure53 for all Proton Pass applications and browser extensions, along with the Proton API. This was a “white box” audit, meaning the security researchers were given full access to the Proton Pass source code, along with full access to Proton Pass engineers.
More information can be found in the blog post over here. The audit report can also be found in the blog post.
I’ve been using Proton pass for about a week and it’s okay so far.
Importing passwords from another manager is pretty easy, except that it can only be done from the browser extension. I had to dig out my laptop to import my passwords which was kind of annoying since I rarely use it.
Proton Pass also doesn’t work great on mobile, it rarely recongnizes username fields in my browser. This means I have to manually copy/paste my username and password from the app to the browser to login, which is annoying.
I really like that Pass automatically generates a private email address for each website, but I’m not sure how useful that is in terms of privacy because I still have to get things shipped with my real name and address.
Another nitpick I have is using the same password for my email to also secure all of my passwords and generate my TOTP for 2FA. If my Proton password gets compromised then all of my passwords, my 2FA, and my email are compromised. Seems like a pretty serious security risk, but I’d really appreciate it if someone who knows more about security could explain to me why this is actually okay.
Not sure if I qualify for that, but just logically, there’s only really a difference if you are not planning on storing your email password in your password manager anyway. If you do that, it doesn’t really matter that you have the same password for both, since if your password manager is compromised, your email is just as compromised.
But, and it’s a big “but”, that’s assuming you’re using a cloud-based password manager that only requires a single master password to get into. My point of reference here is 1Password, where that’s not enough - you also need a device with which you have logged in before, or you need your long, unmemorable Secret Key in addition to your password. You cannot log into 1Password on a new device with just your master password, the way that it appears to be possible with Proton.
Personally I don’t use 2fa in my password manager unless it’s something I don’t care too much about securing because of everything you said. I use bitwarden but they offer the same service. My boss uses it and I can’t understand why he would trust one password to secure literally everything. Seems too easy to hack compared to keeping 2fa separate.