I have heard back from CND. So far this morning, the issue has gone to the top of CND, Colomer and even legal in Revlon Pro. So... yea. They are taking it pretty seriously.
Re: Logistics... It is VERY complex. The only additional action they can take is to put serial codes on each product they manufacture and to note where each bottle goes. This adds a layer of complexity (and serious cost) which will further strain an already challenged supply chain. A good example is S2. We know who we have sold products to. What we don't know is IF they have sold that product to someone else (who is selling on Flea Bay, etc...) or if the product that someone we haven't sold to came from us or not.
If we had a serialized inventory so we could fully track all of this, but the cost to us would easily triple our distribution costs and radically slow us down on delivery. Now scale that up to Colomer who deals with multiple lines in multiple countries and... well... its a mess.
There are some other ways that CND can better this (and some of those system have and are being implemented) however I can't openly discuss them.
What they can't do is go and "Infiltrate" them. There you start getting on legally cagey ground. But let me know if you ever fancy a vacation... er... somewhere. I am sure I have some air miles to spare for a VACATION. SOMEWHERE.