The mothership is alerting members of this online program and forums that their account credentials, login and password, have been compromised. Although such events are common enough elsewhere on the interwebs, it’s quite unusual for one to affect Apple.
The email sent to members was included in the post:
Dear Apple Learning Interchange member,
We recently learned that the security of Apple Learning Interchange (ALI) members’ names and passwords may have been compromised. These accounts are limited to accessing the ALI discussion board and do not contain sensitive information such as credit card or social security numbers.
If you use this name and password combination on other websites and services, you may risk vulnerability on those sites. We strongly recommend that you change your password on any site that might have the same name and password combination.
We apologize for the inconvenience, and thank you for your continued participation in ALI.
The Apple Learning Interchange Team