Q: I'm looking for the most secure online backup service. Which has no access to your password
A: Concerning security, a leading cloud backup and storage services online that comes to mind is SpiderOak. In addition to standard triple encryption on backup, transmission, and at the end of storage, you create your password on your own computer, not on their web interface. SpiderOak servers will never receive your password, which offers a real not aware backup security experience. Be careful and make sure you have a great memory or store your password in a safe place, because once you lose your password, there is no back.
Consult our full review SpiderOak and do not forget to see how it compares to other online backup services.