The content of this article has been derived in whole or part from David McMahon. Permission has been received from the copyright holder to release this material under the Creative Commons Attribution-ShareAlike 3.0 Unported license. Evidence of this has been confirmed and stored by OTRS volunteers, under ticket number 2008070210016247. This template is used by approved volunteers dealing with the Wikimedia Open Ticket Request System (OTRS) after receipt of a clear statement of permission at permissions-enwikimedia.org. Do not use this template to claim permission.
The composite definition to proactive cyber defence quote David McMahon's book of the same name with full copyright permission under GFDL. — Preceding unsigned comment added by Grammaton (talk • contribs) 15:59, 2 July 2008