It’s worse now. There are a lot of apartment building facilities management systems on the public internet now with poor security.
Want to make yourself a fob to get into the building, or into someone’s apartment? Want to get a listing of when those people enter and exit the building and when they’re generally not home? Well, now you can. It’s not a real high percentage of buildings that have their management systems exposed that way, but in raw numbers, there are a whole fucking bunch of them.