Editor’s Note: This is an updated version of this article, which was first published the Tofino Security Blog on June 14, 2011.

Honeywell and the ISA Security Compliance Institute last week announced that two more Honeywell products, the Experion® C300 DCS controller and the Experion fieldbus interface module (FIM) joined the Honeywell Safety Manager in achieving its pioneering ISASecure Level 1 certification. Following this announcement Dale Peterson questioned the value of some aspects of ISASecure certification.

Here is why I believe, as I did in June 2011, that ISASecure certification is valuable. Read more »