10 Encrypt Your Backup Method
If you have data, documents or files that are particularly sensitive, you can never be too careful about handling them. That’s especially true if you need to regularly back up these documents or files.
You can encrypt a new Time Machine drive by selecting Encrypt backups while in System Preferences > Time Machine. (To encrypt an existing one, you’ll need to erase it and set it up as a new, encrypted drive.)
But if you’re working with a smaller amount of sensitive data, you might consider a more portable option like this 16GB encrypted flash drive. It sports military-grade, AES 256-bit encryption that’ll keep your most private files secure. Best of all, it fits easily into any pocket or bag — so you can always have it on you when you need it.