Amazon's Ring has fired four employees for accessing users' videos.
The company - which makes home security devices - has confirmed four workers have been let go in a letter sent to US senators, in response to queries about its security practices.
Ring - which is owned by Amazon - noted that in all four cases, while the employees were authorised to view the videos, the access "exceeded what was necessary for their job functions."
In a small section of its detailed response, the company wrote: "Over the last four years, Ring has received four complaints or inquiries regarding a team member's access to Ring video data.
"Although each of the individuals involved in these incidents was authorised to view video data, the attempted access to that data exceeded what was necessary for their job functions.
"In each instance, once Ring was made aware of the alleged conduct, Ring promptly investigated the incident, and after determining that the individual violated company policy, terminated the individual.
"In addition to taking swift action to investigate and take appropriate disciplinary action in each of these cases, Ring has taken multiple actions to limit such data access to a smaller number of