What is Respond Function?

The Respond function ensures that organizations can effectively contain and mitigate the impact of cybersecurity incidents once they are detected. Key categories include response planning (maintaining and executing documented response plans), communications (coordinating with internal and external stakeholders including law enforcement and affected parties), analysis (investigating incidents to understand scope and impact), mitigation (containing incidents and eradicating threats), and improvements (incorporating lessons learned into updated response strategies). A mature Respond function requires pre-established incident classification schemas, escalation procedures with defined severity levels, communication templates for different audiences (technical teams, executives, customers, regulators, media), forensic analysis capabilities (whether internal or through retainer agreements with incident response firms), and regular tabletop exercises that test the response plan against realistic scenarios. The effectiveness of the Respond function is measured by mean time to respond (MTTR) and the ability to contain incidents before they escalate. Organizations should also consider regulatory notification requirements — GDPR's 72-hour window, HIPAA's 60-day deadline — and build these into their response plans as checkpoints.