Nothing wrong with this, but a strong password for all Unix accounts (or, ideally, only allowing SSH with public key authentication) is essentially all you need

Nothing wrong with this, but a strong password for all Unix accounts (or, ideally, only allowing SSH with public key authentication) is essentially all you need. Unless you're using a dumb password, you're far more likely to be compromised by an application or OPSEC flaw (like someone getting into the email you used to register your server hosting account) than some crazy SSH compromise.