Pickpockets are a problem in all major cities worldwide, with a recent influx of illegal immigrants, the problem has been rising lately in Belgium. Always keep your wallet in your inside pocket instead of your backpack or back pocket! Beware of small groups of young men sticking together! When carrying a backpack in public transport, always keep your backpack in front of you like between your legs on the ground or something, difficult to reach places! Police in general is very helpful if you run into trouble and most touristic areas now have private security guards patrolling the grounds.