Two-factor authentication is a powerful and simple way to greatly enhance security for your Heroku account. It prevents an attacker from accessing your account using a stolen password. After a 4 month beta period, we are now happy to make two-factor authentication generally available. Turning on two-factor authentication You can enable and disable two-factor authentication for your Heroku account
![Two-factor Authentication Now Generally Available](https://cdn-ak-scissors.b.st-hatena.com/image/square/a1b2a24fb8bb6b5daa830ba9854ce4ba0af7b021/height=288;version=1;width=512/https%3A%2F%2Fwww.herokucdn.com%2Fimages%2Fog.png)