CISA, Department of Homeland Security (Director Christopher Krebs), Guidance on the Essential Critical Infrastructure Workforce, Version 3.0 (Apr. 17, 2020) (Ex. SEC-18-002)
Cybersecurity and Infrastructure Security Agency (CISA), Department of Homeland Security (Director Jen Easterly), Guidance on the Essential Critical Infrastructure Workforce, Version 4.1 (Aug. 10, 2021) (Ex. SEC-18-001)
