Looks like several users are having the same issue...but as one poster (asabban Oct 29, 2014) notes...
...the people who could give a response do not participate here, so while I understand that the situation is frustrating it won't get by complaining at the community...I think the right processes have already mentioned. It is not the first time the established processes do not work or do not yield the expected result, in such a case the issue should be escalated through the Support Account Manager or Sales representative...Actually it was already mentioned that the detection was not by any static pattern but due to behavioral analysis.
Yeah that is true and I have talked with the person who started the thread and he mentioned they have reported a false positive to mcafee using their procedures many times and NSIS problem is something that has been there for a long time without a respond from Mcafee.
Here is false positives of NSIS
Over the time almost all other AVs whitelisted NSIS yet Mcafee fails to do so under not one but many false positive reports. However thank you very much for your interest taken on this subject.