The logs indicate unauthorized access from 104.18.16.29, an external IP, to the building camera's administrative console during off-hours. Restricting access only to approved IPs ensures that only authorized personnel can remotely control the cameras, reducing the risk of unauthorized access and manipulation.
* Implementing WAF protection (A) secures against web application attacks but does not restrict unauthorized administrative access.
* Upgrading the firmware (B) is good security hygiene but does not immediately mitigate the active threat.
* Blocking IP 104.18.16.29 (D) is a temporary measure, as an attacker can switch to another IP. A better long-term solution is whitelisting trusted IPs.