I don’t know about you, but I have always had a hard time keeping all the different IEC SCADA Security efforts straight. Well Tom Phinney of Honeywell sent out a cogent and concise description in a recent email, see below.
The IEC TC65 technical committee is chartered to produce standards in the area of industrial process-measurement [...]

The US generally does not pay enough attention to the IEC efforts. I certainly plead guilty, but the main reason is it is hard or relatively expensive to get the documents. This does not mean there isn’t a lot of interesting work there.
I just received a good paper from Frances Cleveland that covers the structure [...]

It takes attention to detail to keep the IEC Working Groups straight let alone get a standard issued. But I have to take my hat off to these Working Groups, they are doing the hard work of creating SCADA security standards.
In January I had a chance to review and comment on two documents that were [...]