Then you'd be aware that the vast, vast, VAST majority of the world, even the 'first' world, does not live in areas with security guards looking out for their stuff.

Seriously man, do you think those security guards go home after their shift to a neighbourhood that pays other security guards to look out for their shit?

Stapled - If it was foul play, hopefully someone just let the air via the valve. Or maybe you had something stuck in the tire that was kind of sealing it's own puncture, if you know what I mean, but this time when you parked it got moved about. That has happened to me before. A nail, for example, in the tyre can sometimes not leak for a while.