Translations:Node Hardening/15/en

Umbrel allows you to install a bunch of different apps, some not being Bitcoin or Lighting related at all such as Nextcloud. By doing so, especially if you're exposing the application publically, you increase the attack surface of your node system. If someone were to exploit a vulnerability in a exposed service or application, the attacker would potentially be able to retrieve your keys stored on the system and steal your funds. In other words, a Lighting node should be dedicated to that task and not be used for a plethora of other things.