Got robbed

Here is another interesting thing I found out when insurance adjuster was here. She noticed a small spot on the drivers door window rubber seal around the window. It was a small cut right evan with the window lock for sliding window. On the inside of the window was a "dimple" lined up perfectly with the small cut outside. Is it possible that they know how to break in thru a window door seal. Doesn't seem likely the way the window frames are designed, but then, I am not a scum-bag crook, but it is ironic that it is there.