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#11
Actually, you do have control of your data's security. The most reliable cloud backup services are paid services and those install software on your computer that encrypts your data before it ever leaves your computer and unencrypts it when you retrieve it. The service cannot access your data. If you are really paranoid (not necessarily a bad thing, btw), you can apply your own encryption before the service applies their own encryption.
If you use free cloud storage (which I discourage), you can always use your own encryption software.