A decision chain is the sequence through which people observe information, interpret it, choose a response, and carry out an action. In cyber security, it describes how information becomes an operational decision-not just how data moves through technical systems.
Attackers or misleading information can disrupt this chain by exploiting urgency, confusion, or trust in an unverified message. A fabricated alert or instruction may prompt harmful action even if no system is compromised. Defenses include using trusted information sources, authenticating orders, independently confirming unusual requests, and practicing crisis procedures so people know when to pause and verify.