Which of the following is not a step in the incident response process?

The incident response process typically includes several key steps designed to effectively address and manage security incidents. These steps usually encompass identification, containment, eradication, recovery, and lessons learned.

Non-repudiation, while an important concept in cybersecurity, specifically refers to the assurance that someone cannot deny the validity of their actions or the authenticity of a message. It involves ensuring that parties in a communication cannot later deny the transmission of a message or the integrity of the transmitted data, primarily through mechanisms like digital signatures and auditing.

In the context of incident response, non-repudiation does not fit within the defined steps aimed at effectively managing and resolving security incidents. Instead, it pertains to maintaining accountability and proving the validity of data and communications post-incident, rather than being a tactical action taken during incident management. Thus, it is not considered one of the procedural steps in the incident response framework.