Mod Description: This mod will log every time an administrator logs into your ACP. It logs the time and IP along with which user it was.

The logs may not be cleared by non-super-admins and the plugin cannot be deactivated by non-super-admins

Link to Mods DB: Get It

Looks quite useful. Might give it a try, but my site doesn't come under attack at all really xD

That's quite useful to see if someone is bruteforcing.

Agreed, definitely seems useful .