A group of hackers say they breached a massive trove of security-camera data collected by Silicon Valley startup Verkada Inc., gaining access to live feeds of 150,000 surveillance cameras inside hospitals, companies, police departments, prisons and schools.

Companies whose footage was exposed include carmaker Tesla Inc. and software provider Cloudflare Inc. In addition, hackers were able to view video from inside women’s health clinics, psychiatric hospitals and the offices of Verkada itself. Some of the cameras, including in hospitals, use facial-recognition technology to identify and categorize people captured on the footage. The hackers say they also have access to the full video archive of all Verkada customers.

Also available to the hackers were 330 security cameras inside the Madison County Jail in Huntsville, Alabama. Verkada offers a feature called “People Analytics,” which lets a customer “search and filter based on many different attributes, including gender traits, clothing color, and even a person’s face,” according to a Verkada blog post. Images seen by Bloomberg show that the cameras inside the jail, some of which are hidden inside vents, thermostats and defibrillators, track inmates and correctional staff using the facial-recognition technology. The hackers say they were able to access live feeds and archived video, in some cases including audio, of interviews between police officers and criminal suspects, all in the high-definition resolution known as 4K.
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