It happened just like they say in travel books and on the State Department website: four pasty tweens pushed on behind us during rush hour on the Metro, asking distracting questions like "is this the train for the airport?", and we could feel them pawing our purses.  We still slapped their hands away and started yelling "no" very loudly, but my Pacsafe Slingsafe was on lockdown so I knew they weren't getting anything.  This pack is very secure and comfortable, very spacious and somewhat water resistant.  The green color is pleasing, and I plan to buy a second bag in a different color for more options.