A scam we had in our apartments, was an owner had been cut off due to unpaid bills
He was unemployed and had no money
He had a top floor apartment, like us
We all have solariums with a power point
He had strung an extension cable across the roof, to an apartment where the owners were non resident.
Plugged into their roof socket, he could then have free electric to run his appliances!
Our Presidente was informed of the rogue cable and it was promptly removed, with I believe, no legal action taken.
Most people now have had an isolation switch installed for the power point on their roof, or turn their electric & water off when shutting up their home.
We all also have water taps on our roofs, who knows, he may well have used water too?!
Something else to be aware of!