Burglars and "Feeling Secure"
From Confessions of a Master Jewel Thief by Bill Mason (Villard, 2003):
Nothing works more in a thief’s favor than people feeling secure. That’s why places that are heavily alarmed and guarded can sometimes be the easiest targets. The single most important factor in security—more than locks, alarms, sensors, or armed guards—is attitude. A building protected by nothing more than a cheap combination lock but inhabited by people who are alert and risk-aware is much safer than one with the world’s most sophisticated alarm system whose tenants assume they’re living in an impregnable fortress.
The author, a burglar, found that luxury condos were an excellent target. Although they had much more security technology than other buildings, they were vulnerable because no one believed a thief could get through the lobby.