There is no network cable interface upstairs. Is the property responsible?

If the property bears appropriate fault liability, it can be claimed that the property company's practices are improper and there is a causal relationship with the losses caused by the neighbor's photo taking. Property is by no means a middleman, but a third person. You need to take responsibility. Don't be fooled by the property. We can negotiate first. If negotiation fails, you can bring a lawsuit to the court.