Trust No One!
"... so innocent mistakes along these lines are more or less inevitable in the absence of better communication among security firms. "
Perhaps if the security firms set up a shared community bulletin board where could post details of their activities....oh, wait a minute.
"... but this was a system set up by the Russian lab, which had asked DNS providers to redirect data sent from the two software nasties so as to examine their network traffic."
By what authority can Kaspersky ask DNS providers to redirect internet data to their own location in order to analyse it? If I'm working on developing a geographically distributed industrial control and monitoring system, of a novel and hopefully profitable nature, can I trust the DNS providers to not divert my data to Kaspersky, or anyone else so that they can analyse it and copy my techniques?