Not Quite on thread, but before joining the ranks of the exalted, did my time on the ground side of things.
This has always happened, and probably always will, possibly of more concern now than ever before, but obviously being addressed.
The point of this post is that in my very early days, I flew with a skipper who had been a baggage handler at a major airport, and his advice was:
'Don't bother with locks or anything, the guys go straight through them. They know how to drop the strongest cases so the locks will spring'
'The only way to dissuade them is a long canvas strap, crisscrossed as if you're wrapping a present, then tied with a couple of knots, free end taped down' 'These guys only have moments to open a bag, check for goodies, reclose it and send it on it's way, so yours should go into the too hard file'
Of course the strap can be cut, but upon arrival at the carousel this will be obvious, localising the incident far more than the thieves would want.
Has worked for me for many years.
Happy Travelling
F88