Free standing glass shelves can be anchored to a wall for additional stability if you have concerns about the safety of your shelving unit. How you do this depends on the design of the free standing glass shelves. If the shelves are supported by a wooden or metal frame, you’ll be able to use the same methods for anchoring the unit to the wall as you would with any other shelf.
However, if it’s an open concept unit and you’re looking to secure the glass shelves directly to the wall, you’ll need to obtain fasteners specifically meant to support glass shelving.