Enhanced methods and systems for securing and monitoring cargo are described. Some examples provide a cargo monitoring system (“CMS”) that is configured to track, identify, and report about anomalous conditions or events related to cargo shipments. The CMS may include a software system that receives conditions information from electromechanical locks that secure cargo. The locks include data terminals that facilitate near real time monitoring of cargo. The electromechanical locks are installed on the bars or other mechanism (e.g., door rings) that lock the doors of a cargo container, train car, van door, or the like. The data terminals include logic that is configured to transmit to the CMS information about current conditions, such as location, temperature, lock status (e.g., open, closed), tamper attempts, and the like. The cargo monitoring system interprets the received information and performs various actions based thereon, such as to transmit alerts if anomalous conditions are detected.