South Bend Police issued a warning to residents: A group of sales people are canvassing neighborhoods trying to convince homeowners they need a new home security system. The only security is for the scam artists making bucks by separating you and your money.

WSBT's Colleen Ferreira spoke with homeowner Brian Liggett after he was approached by one of these scammers. "She approached us as saying she noticed there was a date on our ADT system ... 2000." She tried to sell him a “free” security system worth $850 and all Liggett had to do was pay $40 monthly for the service.

When it comes to protecting his home, Liggett’ trusted ADT for 10 years. He pushed the woman on her “too good to be true deal.”

She hesitated when asked where she was from, but finally said Michigan City. The “business card” she offered was no business card … she had to write her name on it. And that, police say, is a red flag.

If you have concerns about a security system a door-to-door salesperson wants you to buy, do not sign any contract or pay any money.

South Bend Police warn home and business owners with existing alarm services to carefully check the credentials of any person selling products door-to-door and to be mindful of existing contracts for alarm services before entering into additional agreements with a secondary company.

If you already own a security system, call the company to verify if their worker is trying to sell you a new or upgraded system. If you find it’s a scam, call police.