Transcript for Is your 'nest camera' being hacked?
Welcome back to "Gma." Some security-minded homeowners are finding their faith shattered by the security cameras they installed to protect them. Turns out their cameras were apparently hacked and you could also be at risk, but there are ways to protect yourself. Meet nest cam. Reporter: It's the popular home security system that lets you keep an eye on your home while you're away. Use it to solve mysteries. Reporter: But this morning, Adam king says the nest camera he uses to watch his dogs while at work was really watching him. I was getting dressed in the privacy of my own bedroom when I realized that someone had been watching me. Reporter: King says his account was compromised, allowing a total stranger to spy on his every move. He said to me, no one wants to see that. Reporter: Once king knew he was being watched -- I had no choice but to run back in the bedroom and just unplughe camera. Reporter: But this is not the first time a stranger has accessed a user's nest account information. They messed with our thermostat. Who does that? Reporter: A Chicago couple started hearing voices coming from their son's room. I was shocked to hear a deep, manly voice talking to my 7-month-old son. My blood ran cold. Reporter: The digital intruder's voice coming from their nest camera installed in the baby's room. According to experts using the same password for multiple accounts is a major pitfall. The issue that's been going on with nest devices is hackers really just use pass words that people have reused on various accounts and then got exposed in a data breach. Reporter: In e-mails with customers, nest says it takes their security very seriously, adding, while we can't stop password breaches across the internet, we're committed to limiting the impact of compromised credentials on nest accounts. And in a statement, Google which owns nest, says a two-factor verification eliminates this type of security risk. The company is introducing features that will reject compromised passwords and allow customers access to track what's going on. There are measures that you can put in place. That goes across the board with anything that has a password. Still creepy though. Definitely. Thank you for that story. Appreciate it.
This transcript has been automatically generated and may not be 100% accurate.