SC300ES,
It is attached to the bumper pad by 3M tapes on the full perimeter (all four sides).
I guess one can always yank it off if one tries very hard, but it probably would also be damaged in the process. In that sense, I guess no one is gonna steal it.
Thieves steal stuff to resell it.
If a product is damaged in the process, no one will buy it. Therefore, no one will steal it.
Unless someone steal stuff for one's own use. That is rare.
I won't lose sleep over it being stolen.
Besides, a side mirror probably worths much more than that.
- break the window
- pull out the trim piece
- loosen three screws
- done in 1 minute (mirror intact)