Intelligence agencies can remotely intercept data from these smart home devices and use it to track down targets, according to the intelligence director’s Tuesday testimony.

“Intelligence services might use the [Internet of things] for identification, surveillance, monitoring, location tracking and targeting for recruitment, or to gain access to networks or user credentials,” Clapper told the Senate.

His statements echo a report released this month from Harvard’s Berkman Center for Internet and Society that describes how spying on Internet-connected devices could allow intelligence officials to get the information they need, as opposed to cracking through encrypted communications sent via a more secure device, like a smartphone.

It’s not just the authorities who know this, either. Hackers have hijacked Internet-connected baby monitors to spy on children. There’s even a search engine to help you locate unsecured Internet-connected devices.