Under CIP-008 R3.1, what is the timeframe for documenting lessons learned after an incident response plan test?

The correct timeframe for documenting lessons learned after an incident response plan test, as stated under CIP-008 R3.1, is no later than 90 calendar days. This requirement emphasizes the importance of capturing insights and experiences from the testing of incident response plans, ensuring that organizations can effectively enhance their security posture.

By establishing a timeline of 90 calendar days, the standard allows sufficient time for teams to analyze the test results, discuss any observations, and formulate actionable improvements. This process is critical as it helps to bolster the effectiveness of incident response plans, ensuring that organizations are better prepared for real incidents in the future. Taking this proactive approach not only fulfills compliance obligations but also fosters a culture of continuous improvement in cybersecurity practices.