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The first step a system operator should take after detecting a security incident is to:

Identify the source of the security incident by its IP address and launch a counter-attack.

Call the company Computer Incident Response Team (CERT) and report the incident.

Disconnect the system from the network by unplugging the network cable from the network interface card (NIC).

Use the security incident response procedure and start an emergency system shutdown.

Explanation

Incident Response Plan

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