* Given access to more people or other ways.
* Bypassed any logging that might be used during crime investigation.
* May have increased the likelihood of the system failing.
* (more theoretical) Increased the attack surface, and invited more crimes of digital opportunity.
So they may be partly or wholly responsible for some bad things that happen.
And also may be held responsible by others, with criminal and civil liability.
> [...] so if you’re in the same position as Frank, give it a try!
Don't, if you're in the same position (i.e., sneakily doing it to landlord's access control box, which is relied upon by multiple other neighbors).
But if you're in some different position -- such as it's your own property, and there's some kind of informed consent of all legitimate parties affected -- then kludging the system, by splicing a solenoid wire, might be good and appropriate.
Personally, I’m of the opinion that this kind of thing should be done by those who understand the risks and accept them regardless. It’s fun and interesting, and in the real world it will almost certainly never be an issue.
I'd be fine installing this in my own house, but it shouldn't go in a shared space.
in fact, I've done something similar, wiring my unifi door bell to be able to unlock my matter-enabled deadbolt via an esp32 in the wall.
Anyone can get into a complex by following someone else in.
Or, in this case, just power the solenoid wire that is _already outside_ as the OP did.