All it took was one missing letter in an email address. A Florida family lost more than $30,000 when an email impostor infiltrated their home purchase and made off with the down payment. Here's how this real estate wire fraud happened.

As the weather gets colder, we turn up the heat -- and so do cyber crooks peddling fake energy-saving devices. They’re flooding inboxes with fake emails and false claims like endorsements from billionaire Elon Musk. They know that as electric bills go up, people are looking for ways to cut down.