Today I saw an interesting post on LinkedIn by Bryan McDonald, a chemical security inspector with the Office for Chemical Security in CISA. His post pointed at a Chemical Facility Anti-Terrorism Standards program fact sheet on “Tiering Methodology” that I had not seen. This is a nice overview of the enhanced tiering process that DHS started as part of their CSAT 2.0 upgrade back in 2016.
I was able to trace the fact sheet back to the “CFATS Tiering Methodology” web page. It has been quite some time (2018) since I last took a detailed look at that page. There have been some minor revisions and this fact sheet has certainly been updated for the CISA branding. It is well worth the read.
I have no idea when either the page or the fact sheet was
updated. DHS stopped the practice of dating their web products when changes
were made. Without those dates it is impractical for me to go back and check
every CFATS related page (and there are a very large number of them) to watch
for changes. And OCS does not report the changes to their web site on their
CFATS Knowledge Center web site like they used to.
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