The most secure password storage is offline. A criminal on the other side of the world can’t steal your passwords if they’re not on the Internet to be stolen in the first place. Until recently, storing your passwords offline has meant writing them in a notebook. One of my clients keeps all of her business passwords on 3x5 cards, in a locked desk drawer, in a building with a burglar alarm. Nothing wrong with that; a securely managed written list is absolutely acceptable.
It’s acceptable, but not perfect. For example, a written list can be lost or…