Open systems, open data, and open-source software provide a means to promote greater transparency, public trust. But what happens when adversaries can abuse the same systems? Any system that s open to everyone is also open to those who wish to use it for malicious intent. UK traffic cameras and some select public safety cameras are openly visible to any civilian. US traffic cams that openly disseminate live feeds to anyone over the web can be seen via Skyline webcams’ feeds.
Source: https://www.bleepingcomputer.com/news/security/how-public-safety-systems-can-be-abused-by-nation-state-actors/