In the immediate aftermath of a cyber-attack, the operational focus is governed by the "Containment, Eradication, and Recovery" cycle defined by theNIST Special Publication 800-61 (Computer Security Incident Handling Guide). Within this framework,Reporting to local law enforcement(Option C) is considered the lowest operational priority relative to the immediate technical response. While reporting is an essential legal and compliance step, it does not stop the spread of malware or restore critical business functions.

The highest priority is alwaysDefining the scope and impact(Option A) because you cannot fix what you have not identified. This involves forensic analysis to determine which systems are compromised and whether the attack is ongoing. Following closely isIsolating affected systems(Option B), which is a "Life Safety" equivalent in the digital world. By disconnecting infected servers or segments of the network, the incident response team prevents the "lateral movement" of the attacker, thereby protecting remaining assets and preparing for the restoration of services.

According to theIBFCSM CEDPbody of knowledge, emergency managers must distinguish between "Technical Response" and "Investigative Support." Law enforcement’s primary goal is the preservation of evidence for prosecution, which can sometimes conflict with the organization’s need for rapid service restoration. Therefore, a well-designed Incident Response Plan (IRP) ensures that the technical team stabilizes the "patient" (the network) first. Only once the threat is neutralized and the impact is understood should the organization transition its resources toward external reporting and legal proceedings. For most local cyber incidents, federal agencies (like the FBI or CISA) are often more relevant than local law enforcement, further lowering the priority of a "local" report during the high-stress execution phase of the response.