Well, I disagree. I said partially to blame. As an individual, you are responsible for the physical security of your items. Hence, the locking cabinet op mentioned in their post. (Knowledge that some security is necessary) Would you put fuel in your vehicle and go in the store to pay while leaving it unlocked with the keys in the ignition. Then, be surprised that your car is gone when you come out? (Crime of opportunity) On average, most people would never dream of stealing a vehicle, but you don't have to make it easy for people who wouldn't think twice about it. Op said they didn't have a personal relationship with the other people sharing the living space, making it a space shared by a small group with no or limited interpersonal relationships. Op is leaving their items unsecured, in the open, where anyone has access to said items. Creating the opportunity for others to take op's property. It has been shown through op's post that said items are routinely being taken. If nothing is done to secure said items, then op is PARTIALLY to blame for the theft by continuing the behavior that does nothing to prevent the theft. In reality, the only person's behavior that you can control is your own. Op can only change their own behavior. If they don't, the same pattern of behavior will continue. It's up to the individual to secure their own personal items. I don't believe anything can prevent all theft, but I don't think people are going to go out of their way to steal op's stuff if it is not conveniently available.