Critical Infrastructure Fundamentals

https://www.opswat.com/free-tools

https://www.dhs.gov/

https://www.cisa.gov/secure-our-world

https://www.eac.gov/blogs/ci-scoop-history-critical-infrastructure-designation#:~:text=The%20definition%20of%20critical%20infrastructure,Clinton%20signed%20Executive%20Order%2013010.&text=Two%20years%20later,%20in%201998,63%20(PDD-63)

https://www.cisa.gov/news-events/directives/homeland-security-presidential-directive-7

https://www.cisa.gov/topics/critical-infrastructure-security-and-resilience/critical-infrastructure-sectors