So how I understand cloud backing up works is there have servers around the globe. Proton is based in switzerland so thats where their main servers are but I doubt they have offices around the globe like in Malaysia and Brazil.
I think maybe what they mean is they rented a whole server in some other host provider and only they have access to it for administration but I doubt they are physically there or own the establishment.
As far as I know, the main data center is in Zurich, but they own data centers in Germany and Norway as well, mostly to increase resilience to network problems.
I knew they they only store their customer data in their data centers, but I might be wrong, of course.
What you can find on their web page (e.g. here: https://proton.me/support/mail ) are statements like:
- Strong physical security: We've invested heavily in owning and controlling our own server hardware. Our data centers are located at highly secure sites that require biometric access.
If the app is open source, doesn't it make it easier for hackers to find the flaw in the code? Given there is no known attacks means no hacker was able to find any flaws?
so kind of the open source methodology audits itself?
This is a philosophical question!
The world runs on open source software. Linux, from the kernel to the GNU software stack, is fully open source. The encryption libraries that you use every day when accessing any web page (for example openssl) are open source.
They have a history of security problems found, for sure, but being open source, finding problems can be done by both good and bad entities. If a potential problem is identified by someone who does not want to exploit it, it is reported to the community, normally without advertising the problem itself before a patch is released.
If a software is closed source, apart from the commissioned auditing process, which is the same for OSS, only bad actors can have the motivation to break the laws and look for a way to access the code and find its problems. It’s an expensive thing to do, so when they find a problem, they exploit it or sell it.
But again it is more a philosophical question.