This morning a routine email was accidentally sent to many of our GitHub Enterprise customers. In these errant emails, customer email addresses were included in the To: field, making them visible to anyone who received the message.
We have stopped the remaining messages in the email batch from being sent, and are investigating how this happened.
We are very sorry that your email address was accidentally shared. Your GitHub Enterprise installation is unaffected, and no license keys or any other data were exposed during this incident.
We are investigating the root cause of this email issue and will update our blog with our findings.
Again, we are very sorry this happened. Your privacy is very important to us and we will be making changes to ensure that this does not happen again.
If you have any further questions please email us at firstname.lastname@example.org