Ist nicht mehr das Neueste vom Neuesten aber immer wieder wichtig hevorzuheben:

[Upgrade your SSH keys!](https://blog.g3rt.nl/upgrade-your-ssh-keys.html)

> If you've created your key more than about four years ago with the default options it's probably insecure (RSA \< 2048 bits).
> Even worse, I've seen tweeps, colleagues and friends still using DSA keys (ssh-dss in OpenSSH format) recently.
> That's a key type similar to RSA, but limited to 1024 bits size and therefore recommended against for a long time.
> It's plainly insecure and refused for valid reasons in recent OpenSSH versions (see also the changelog for 7.0).

Also nichts wie rann und updaten...

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