I personally use SpiderOak[^1], which gives 2GB for free and 100GB/month for 10$ (5$ for edu accounts), and encrypts your data locally, before sending it to the

I personally use SpiderOak[^1], which gives 2GB for free and 100GB/month for 10$ (5$ for edu accounts), and encrypts your data locally, before sending it to the cloud. Moreover they don't even store your password in the server (sign in is locally handled), and they claim to have a zero-knowledge policy. As other said, you have to ultimately trust them; however the want to release under an open source license their client software, so one should be able, eventually, to check their claims. [^1]: https://spideroak.com/download/referral/b26d996944aeed4254f695cbe7501fea https://spideroak.com/download/referral/b26d996944aeed4254f6... (careful, it's a referral) Edit: removed the link inline.