1. Why wouldn’t CISA release the IP address? Blocking a specific IP is much easier for a hospital than patching or replacing every affected device. Some might argue that hospitals should just remove the device altogether, but CISA has stated that keeping the device and disabling its network capability is an acceptable solution. It seems very odd not to disclose the IP address. The only plausible explanation is that they want to monitor U.S.-based egress traffic to that IP.

2. The backdoor transmits data in plain text to a static IP address—something a competent hospital network administrator would have inevitably discovered.