Universal Plug and Play (UPnP) can poke holes in your router's firewall to make the camera accessible from the outside. Disable this in your router settings to keep the camera on your local network only.
Panasonic, Axis, and Sony eventually released firmware updates that: intitle webcam patched
Universal Plug and Play (UPnP) can automatically open ports on your router, making your camera accessible from the outside. Disable this feature immediately. Universal Plug and Play (UPnP) can poke holes