28/11/2023
Create a backdoor. Once you have gained full control over a machine, it's a good idea to make sure you can come back again. To create a backdoor, you need to install a piece of malware on an important system service, such as the SSH server. This will allow you to bypass the standard authentication system. However, your backdoor may be removed during the next system upgrade.
An experienced hacker would backdoor the compiler itself, so every compiled software would be a potential way to return.