There are anchoring kits that you can buy. You could also just get some hook enclosures at the hardware store. How ever you do this, it's a good idea no matter what. Think about maybe doing the same with all large furniture in the house.
We bought these chain things, they hook up to the wall then you hook them to your furniture, they work great for dressors, fridge, stove, tv stands and so forth. Our TV is way to heavy to fall over, and there was no way to hook them up, but if it's a flat screen they have kits you can buy.