UPDATE: Ashley LeMay and her husband, Dylan Blakeley, said in December that a stranger hacked a camera they set up in their 8-year-old daughter's bedroom and taunted the child. Todd Craig and his girlfriend, Tania Amador, said that same month a hacker threatened them with "termination" if they did not pay a ransom.

Both couples filed the suit last week in the Central District Court of California, saying Ring's security cameras have "created a living nightmare."

"Instead of helping families protect their homes, Ring security devices have had the opposite effect by permitting hackers to exploit security vulnerabilities in the Ring system to spy and harass Ring customers inside their homes," the suit claims.

LeMay, of Mississippi, said her family had recently installed a camera in their children's bedroom to keep an eye on their daughters. A few days after the device was put in the room, a stranger gained access to it and started talking to their young daughter.

At one point, the stranger told the girl he was Santa Claus and instructed the child to mess up her room and break her television. According to the lawsuit, the hacker also played a song from the horror film "Insidious."

Ring said in a statement in December that: "While we are still investigating this issue and are taking appropriate steps to protect our devices based on our investigation, we are able to confirm this incident is in no way related to a breach or compromise of Ring’s security."

A Ring spokesperson told NBC News on Friday that the company does not comment on legal matters.

Craig and Amador, of Texas, said the person who hacked their camera told the couple that he was standing outside their front door, the lawsuit states. The hacker also demanded they pay a bitcoin ransom and said they would face "termination" if they didn't comply.

The suit alleges that Ring, which is owned by Amazon, does not require customers to implement two-factor authentication for extra security and does not check when someone logs into an account from an unknown IP address.

"Ring's failure to take basic security precautions breached its duty to safeguard the highly sensitive information to which their users entrusted them," the lawsuit says.

The couples are seeking damages.

News of the lawsuit comes on the heels of Amazon's Brian Huseman saying that at least four Ring employees were terminated for violating company policy about access to video data.

"Although each of the individuals involved in these incidents was authorized to view video data, the attempted access to that data exceeded what was necessary for their job functions," he said in a Jan. 6 letter this month to five Democratic senators.

Huseman's letter was in response to the senators' writing Amazon CEO Jeff Bezos seeking information on the company's privacy and data-security practices.


PREVIOUS STORY: A Tennessee family said someone hacked a Ring security camera set up in their children's bedroom and taunted their 8-year-old daughter.

The LeMay family, of Memphis, said they installed the device to keep an eye on their daughters. A few days later, the family said a stranger had gained access to the device and was talking to the little girl.

In a video from the Ring device, the child, standing in her room, asks: "Who is that?"

A man responds that he's her "best friend."

"I'm Santa Claus. Don't you want to be my best friend?" he says.

The terrified girl screams for her mother.

The hacker also played music for the girl and instructed her to mess up her room and break her television.

"You can do whatever you want," he says.

"I don't know who you are," the girl responds.

Ashley LeMay, the girl's mother, said that the hacker could have watched her daughters changing or sleeping.

"They could have seen all kinds of things," she said.

Ring told NBC News in a statement that, "While we are still investigating this issue and are taking appropriate steps to protect our devices based on our investigation, we are able to confirm this incident is in no way related to a breach or compromise of Ring’s security."

The terrifying ordeal the LeMay family experienced isn't the first time there have been reports of security camera devices being hacked.

Earlier this month, a Florida family said someone hacked their Ring device and spewed racial slurs at their 15-year-old son. The family said told NBC affiliate WBBH in Fort Myers that they had to remove the batteries from the camera.

"I was scared... I was scared. I didn't know who that is, how long he'd been watching us and I'm still scared now because I don't have any answers," Josefine Brown told the outlet.

In January, an Illinois family said a stranger hacked into their Nest home security camera and thermostat.

Arjun Sud told NBC Chicago that after he put his 7-month-old son to bed he heard someone talking to the infant. The hacker also turned the head up in the room to 90 degrees.

“The moment I realized what was happening, panic and confusion set in, and my blood truthfully ran cold,” Sud said. “We don’t know how long someone was in our Nest account watching us. We don’t know how many private conversations they overheard.”

During that incident, Google, which owns Nest, told the outlet that its systems were not breached and customers were "using compromised passwords" that were exposed in breaches on other websites.