I'm working on baby proofing since DS has gotten really mobile FAST. I'm looking for the best way to secure this IKEA bookshelf.

It's aluminum with a wire mesh in the surface of the shelf. It's not going to stay in front of the window as it is in the photo. I'm thinking about eye bolts in the wall and zip ties around the back posts. It won't be pretty but I just want it to be safe.

Any suggestions?