Command infrastructure is the collection of systems and services used to direct and coordinate malware-related activity. It can include command-and-control servers, communication channels, and management systems that send instructions, receive data, or help operators oversee an operation.
In cyber security, these systems matter because their exposure or disruption can reveal how an operation works and may help defenders block malicious activity. Attackers may use command infrastructure to issue malware commands, manage compromised devices, or coordinate stages of an intrusion. Defenders investigate related network traffic, domains, and servers to identify and disrupt those connections. Poorly secured infrastructure can also expose credentials, messages, or operational details, creating intelligence about the attackers as well as risks to any systems they control.