Official? Their e-mails are official. They said "third-party application use." You're not going to get any more than that, probably.
actually that is incorrect-my 6 month suspension email and many others that got banned after the tripwire incident were worded differently Account Action: 6-Month Suspension Offense: Exploitation of game mechanics Recent activity on this account has shown characters exploiting functionality to the detriment of the game environment or the intended player experience. The account holder is responsible for all activity on the account. We issue suspensions and closures to protect our players and our service in accordance with our Terms of Use: blizzard.com/company/about/termsofuse.html Exploitive gains such as items or currency may have been removed as part of this action. Further inappropriate behavior may result in additional penalties, including permanent closure. For dispute of this action and further information on exploitative activity, please review our appeal process: battle.net/support/article/how-to-appeal This World of Warcraft account will be reactivated on September 23rd, 2015. Thank you for your time and for understanding. Regards, Customer Service Blizzard Entertainment https://battle.net/support
I stand corrected. But the e-mails are as official as you're going to get. Blizzard isn't going to admit to what they caught. Otherwise, bot makers would just be able to find a way around it.