Researchers from the Ben-Gurion University of the Negev created a method to use infrared (which can look like a blinking red light) from certain cameras to exfiltrate data coming from a targeted network. They created a malware called aIR-Jumper that could be used on a machine within the targeted network to control the cameras. The researchers noted that many surveillance and security cameras are equipped with IR LEDs which enable night vision. Even if they are password protected, that would be easy to circumvent at this point.”]
Source: https://hackercombat.com/blinking-red-light-of-death-for-cameras/