Janitors have access...
...to your server room or LAN closet? Sounds like there are other problems that need addressed, and perhaps disciplinary action taken. One would think that access to servers and networking would not be granted to janitors. Where I work, other than IT, the only people with access are the Fire Department. The building maintenance people don't even have access to the server room, if they need access IT must let them in. All LAN equipment is in locked cabinet.
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