The security of Internet-connected security cameras has been warned on many occasions, but there is often a threat to video spying.

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However, there is another lesser-known threat in the cameras, say researchers at the Chinese Academy of Sciences and Queen Mary University in London. Their findings were reported by Tech Xplore, among others, which analyzed data provided by a large and anonymous IP camera manufacturer.

An IP camera (internet protocol) allows its user to monitor the situation in the home remotely, for example with the help of a smartphone. The researchers found that it is possible to monitor this communication in a way that endangers the user, even if there is no access to the video image itself. It was possible to deduce from the communication generated by the cameras because there are people in the house and because it is empty.

The technology website Komando, among others, also writes about the matter. Investigators say the attacker can see as the camera sends information about movements in the apartment and even detects sitting or running. The data stream sent by the camera changed according to the situation, and a camera that does not send data may refer to an empty home.

However, the burglar should know at which street address the camera being tracked is located. The threat may also affect more users of paid camera security services, as motion tracking may be an optional feature purchased separately.

The camera user should ensure that the firmware is up to date and that any security updates are installed. A unique and hard-to-guess password should be selected as the camera password. If you have trouble remembering one, you may want to consider using password management software such as LastPass or Dashlane.

Camera manufacturers, for their part, should carefully review the security of their products and implement multi-layer encryption for network traffic.