Upset with Blizzard’s temporary implementation of a Real ID system on its official forums, which meant users would have to utilize their real names in order to post, around one thousand users complained to the Entertainment Software Ratings Board (ESRB).
The ESRB promptly responded to those who complained via an email, but, according to WOW.com, sent an electronic communication with all the complainer’s email addresses fully visible in the “to” section of the message, neglecting to use the BCC or blind email option.
The email to those who complained thanked them for contacting the ESRB, noted that Blizzard had reversed the policy and offered:
ESRB, through its Privacy Online program, helps companies develop practices to safeguard users' personal information online while still providing a safe and enjoyable video game experience for all. We appreciate your taking the time to contact us with your concerns, and please feel free to direct any future inquiries you may have regarding online privacy to our attention.
Update: In response to an inquiry, an ESRB spokesperson told GP that the flub was the result of an "an unfortunate error” by an employee. The spokesperson added:
In our effort to respond quickly to the thousands of gamers who wrote to the ESRB, we inadvertently revealed a limited number of recipients' e-mail addresses in our reply. This was both unfortunate and regrettable, and for that we sincerely apologize to all those who were affected. They deserve to trust that their information will be handled with the same confidentiality, care and respect that we require of companies that display our Privacy Online seal.
We take this issue seriously and are doing everything we can to ensure it does not happen again in the future.