The link for my May 3, 2018 HackNYC2018 webinar recording on “The Hole in Control System Security” is at https://q22018.hacknyc.com/en/blogs. Immediately before the webinar, ISA99WG4TG7, Cyber Security of Level 0,1 Devices, discussed the issues associated with the substantial delay or shutdown of process sensor networks when adding security technology such as crypto.
Joe Weiss