Welcome to the forums! I actually hadn't noticed that the mini was lacking a Kensington security slot. That's really interesting, considering many minis see use in small businesses. I guess it really comes down to the environment that you're (or your office) is in. If it's a high traffic, low income area (not being politically correct, sorry), sure, you may think twice. On the other hand, the mini is small and would be easy to lock up in a cabinet if that's an available option. I wouldn't be afraid of putting one in some sort of enclosure as long as it has, say, 6" of ventilation on each side.