Fraud on Craigslist - question

[Allen Clark]

Someone copied my ad and is posing as the owner for a rental I have in Seattle. I have a new renter under contract but I am now worried that this scammer will have others under contract. I have forward the ad to my lawyer for her opinion but wanted to ask here as well. 

Have you had this happen to you? What would you recommend?

[George C.]

Water mark your photos in your ads with your business name & phone number ( ABCD REALTY 111-555-1212), it's very easy to do on your computer. That alone will keep them at bay. They will sooner steal someone else's photos to scam than yours.

 What to do about now? I'd put another ad stating that your ad was hijacked and is no longer for rent, that anyone who made arrangements with someone else about the property should report it/them to the police.