The computer security expert Thomas Ptacek recommends against online backups.
I think main threat from uploading your backups in his opinion is government-level actors.
Apparently it is difficult to encrypt data such that the big governments cannot eventually break the encryption, and backup services are attractive targets for the big governments.
It’s quite feasible to encrypt things with strong passphrases and key stretching that would likely take post-singularity tech to break (just use SRS to memorize the passphrases). You mostly risk it becoming slightly more likely that you’ll be ordered to decrypt. If your personal systems that see the passphrases or decrypted data are compromised, then local backups are there too, so also having them in the cloud is not much worse.
The computer security expert Thomas Ptacek recommends against online backups.
I think main threat from uploading your backups in his opinion is government-level actors.
Apparently it is difficult to encrypt data such that the big governments cannot eventually break the encryption, and backup services are attractive targets for the big governments.
It’s quite feasible to encrypt things with strong passphrases and key stretching that would likely take post-singularity tech to break (just use SRS to memorize the passphrases). You mostly risk it becoming slightly more likely that you’ll be ordered to decrypt. If your personal systems that see the passphrases or decrypted data are compromised, then local backups are there too, so also having them in the cloud is not much worse.