Substack Daily Updates – 4-6-26

Today I published the following on Chemical Facility Security News:

• Looking Back – 3-1-19 – Looking at CISA’s update of their HatMan malware analysis report - https://chemical-facility-security-news.blogspot.com/2026/04/looking-back-3-1-19.html

• Review - Public ICS Disclosures – Week of 3-28-26 – Part 2 – 6 additional vendor disclosures – 6 vendor updates – 1 exploit – Short version of article published here (premium content) - https://chemical-facility-security-news.blogspot.com/2026/04/review-public-ics-disclosures-week-of-3_6.html

• CISA Adds FortiGuard Vulnerability to KEV Catalog – 4-6-26 – Improper access control vulnerability - https://chemical-facility-security-news.blogspot.com/2026/04/cisa-adds-fortiguard-vulnerability-to.html

I have removed the following articles from the CFSN Detailed Analysis paywall:

• Bills Introduced – 2-2-26,

• 4 Advisories and 6 Updates Published – 2-3-26,

• Bills Introduced – 2-3-26, and

• (2021) TSA Publishes Pipeline Cybersecurity Directive.

I posted the following to my social media feeds (X, Mastodon, Substack, and LinkedIn):

• Typo Definition – Descrubes – cleaning instructions.