Proton's server code is not Open Source because it contains filter and anti spam detection which if released, would severely hamper their ability to detect spam and keep their users safe + detect abuse for their service.

Proton has had extensive security audits done and their claims have been backed up by independent third parties.

The definition should be further modified to include legitimate reasons for not open sourcing some code + having audits to back up claims.

[–] Gooey0210@sh.itjust.works -1 points 9 months ago (1 children)

Facebook has their reasons to keep stuff as closed as possible, and they don't claim to be opensource

But proton does, and it's not about privacy or security, but about using banner of foss just for their own benefit, and don't contribute what they claim to the foss community

[–] bluegandalf@lemmy.ml 17 points 9 months ago

They open source all of their clients (when not in beta). They maintain multiple open source cryptographic libraries, in multiple languages, which a lot of developers and companies go on to use. They have a yearly fundraiser for open source and digital rights groups, which they contribute a $100,000 to each year.

Just because their server code is not open source, doesn't mean they don't support open source. It's not an all or nothing situation. Binary thinking and classification is a very dangerous and naïve way to look at things.