INTRODUCTION
The Cybersecurity and Infrastructure Security Agency (CISA) is committed to leading the response to cybersecurity incidents and vulnerabilities to safeguard the nation’s critical assets. Section 6 of Executive Order 14028 directed DHS, via CISA, to “develop a standard set of operational procedures (playbook) to be used in planning and conducting cybersecurity vulnerability and incident response activity respecting Federal Civilian Executive Branch (FCEB) Information Systems.”