They tout security but I don't think it's open source and it looks like everything is stored on Amazon servers.
Minimally it is centralized, and you can't verify that there's no backdoor. In this day and age, that means we're both trusting their core intentions, and also trusting that some government won't step in and silently force their hand. I don't personally feel that is good enough to be considered secure anymore.
That is exactly what I thought when I read the words "secure" and "trust". If it is not open source it is neither secure nor should anybody trust it. The word used in Britain to describe a statement like that is bollocks.
Minimally it is centralized, and you can't verify that there's no backdoor. In this day and age, that means we're both trusting their core intentions, and also trusting that some government won't step in and silently force their hand. I don't personally feel that is good enough to be considered secure anymore.