[etcet]

Don't store your money on servers you don't own. Don't have a web interface. Don't allow anyone to connect. Don't use passwords, use public key encryption. These are the basics.

[tomp]

What if they steal the key?

[jrockway]

The key is encrypted with a long and key-strengthened passphrase, so the Universe will run out of energy long before their computers get the key.

[tomp]

But then, you're back where you started. Why not just use a password in the first place?