To go at it from a less technical perspective, it's important to make sure the right people have access to administrator commands.

To these ends, the usual regulating method is to use the key variable located either on the client or mob structures. This variable should correspond to your BYOND login name, and consequently is a pretty secure way to verify your access.

Additional security measures wouldn't hurt, such as password-protecting exceptionally influential admin commands or disabling cheats completely while the game is being hosted.

*nods in agreement*