He added value to the house and how dare he prevented the town from collecting more money. 

The hurdle of discussing face to face was enough to prevent him doing anything for the remaining 9 months and then he moved. 

By not allowing designated dual agency you could be preventing yourself from purchasing a property that otherwise checks all of your boxes.

There could be simple admin rules put in place to prevent this crap from going on. 

Two-factor authentication may also help to prevent unauthorized access to your information.Accessibility: Do you prefer to access your account with a web browser, or do you mostly use a mobile device?

This will hurt the tenant's credit score, it will warn future landlords when they run a credit check, and it will prevent the tenant from qualifying for a personal loan, home loan, etc.

Kinda hard to make $760,000 appear out of thin air, haha.

Law was passed to monitor and prevent money laundering.   

The illegal process is to show up and chase him off the property, secure it again, and use methods to prevent entry again (dogs, security system, signs, armed person sleeping on the property, etc.).

In 11 years hosting multiple properties, is does not happen often, but it still happens, so we look at how we can prevent it.