SLING BAGS

My aunt and I bought new sling bags last weekend from my former student.  I wanted one so that it would be more convenient when I go travelling during my holidays while my aunt said that she felt safer walking around with a sling bag strung over her body.
Nowadays, I don't really know what is safe anymore.  There have been so many stories of people becoming victims of snatch thieves.  The latest modus operandi of thieves is to work in pairs on motorcycles.  They would try to break the side window of the car and snatch the belongings.  Aiyoh!  What is this world coming to?