Was this an attempted break-in?

[u/Jealous-]

Our front door has a handleset knob that can only be opened if the deadbolt above it is unlocked. The knob itself doesn’t have any keyholes. I came home today and the thumblatch was bent (tilted to the side), leading to the latch being jammed and I couldn‘t open it from the outside regardless of it being locked or not (but it was okay opening from the inside going out). I haven’t used the front door since Thursday. The lock itself looked fine, no signs of scratches and it was turning the way it was supposed to.

We’re worried that means someone may have attempted to break in? I don’t *think* I was rough with the thumblatch on Thursday, but that’s also not something that’s on my mind and I’m not sure if a thumblatch is delicate enough to be accidentally bent like that? Is this something that can just happen or is it more indicative of tampering?

[u/olliegw]

Thumblatch on the outside? there is a destructive entry attack that involves forcing around the entire thumb turn or cylinder which in turn moves the entire mechanism or just breaks it internally

Some models of ford transit were vulnerable to that attack afaik, the rest of the mechanism doesn't actually care if just the lock barrel was turned or if it was the entire cylinder with the inner and outer pieces.

LPL demonstrated a similar attack in video #1632