Home Security Systems Subject to Breaches

Special software uses radio frequencies to trick homeowners.
3:43 | 11/26/14

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Transcript for Home Security Systems Subject to Breaches
Back now at 7:40 with "Gma" on the lookout. And this morning, talking about home security systems. Millions of use them to keep our families safe. But it may be possible to breach that system. And Paula Faris is here with the story. Good morning. Reporter: Good morning. A little disconcerting. It is your sense of security and peace of mind. Your home alarm system. But we're finding alarming as a rule neblts in some of the biggest systems, and it doesn't take long, only a matter of seconds. Alarm systems, designed to protect you and make you feel safe. An estimated 38 million Americans turn to these systems to help secure their homes and businesses. But are you really as safe as you think you are? I just hit go. Reporter: Logan, a cyber researcher, says he's found some alarming weaknesses in some home security systems. All it takes is the right tools and know how. Every system I have tested, from four different manufacturers, they have been vulnerable in the same way. Reporter: Tennesseans Ryan and Bonnie allowing "Gma" on the lookout to visit their house and for Logan to test the alarm system, provided by ADT, bone of the leading companies. You want peace of mind, go to sleep knowing you're safe. Absolutely. Reporter: To disrupt the system, he uses a laptop equipped with special software, an Te nay, andhowing us three ways to interfere with the system. First, he sends a false alarm, causing the homeowner to receive a signal on their key pad that a closed door is open. I will keep doing that until I hit stop. Reporter: Homeowners may think they need to open and close the door to reset the system, potentially leaving them open to an intruder. Way too easy. Second demonstration is more startling. He disarms the system. All I have to do here is hit play. Creates interference with the door sensor. Reporter: You said it's disarmed. Should be. Reporter: I don't hear an alarm. For the final demonstration, when it's activated. You're learning the family's patterns. Exactly. Reporter: And learning the best time to strike. Yes. Reporter: If you're a perpetrator. After restoring the homeowner's system, Logan says the best way to stay safe -- Be aware this is possible. They should call their provider and and them, hey, is my system vulnerable to these source of attacks? Reporter: ADT says they are committed with providing customers, continual security and advancements and works with the suppliers to enhance the securities of our products. They invited anyone with concerns to contact them. While there is no record of the attacks, Logan warns. May not be a huge thing today, but will be in the future. Reporter: For them, the experiment was eye-openering. You had no idea. No idea. Blew my mind. Reporter: So what can you do? Call your security company and for their solution. Pressure them. Our expert told us because of modern technology, this is going to get easier and easier. The miracle of modern technology, you got from Tennessee to here in a second. We perform miracles daily on "Good morning America." It's great advice and mast masterful. Really good advice. Stay on them. And coming up, important headlines for parents about

This transcript has been automatically generated and may not be 100% accurate.

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