A pastebin dump isn't an attack vector, it's what an attacker might do with the loot after compromising you.

Or are you referring to one of your personal passwords ending up on Pastebin? Use unique passwords, set up SSH keys, and set "PasswordAuthentication no" in your SSHD config.

If your threat model is having a hard disk stolen, simply using full-disk encryption or whatever Redis offers is probably fine. Fair warning, though: this is a really weak threat model and won't do anything to protect the data against any stronger attacks.