Alqueda has provided a very useful link. I read it and it has many good tips for travellers. I felt very safe while in VN, but I am a fairly big guy and dress like a bum. I assume any thief figures the next person along is a better target than I am. I do use the lockbox at the front desk rather than leave valuables in my room. I also lock my bag and have plastic ties through all the zippers everytime I leave. It won't stop a real thief but you will know someone has tried to steal from you. Follow the tips provided in 'Alqueda's' post and you should be fine.