Vulnerability in FaceTime Beta (Quietly Patched?)
A vulnerability has been found in FaceTime Beta whereby a logged-in user can view and change any of the account details (including the security question/answer) for that account, without first being re-authenticated. There is also an issue with the logout function, as the password remains in the password field after logout, even after the application is quit and reopened.
Although no updates have been officially released, there are reports that some users can no longer reproduce these issues. Quiet fix by Apple? To be safe, you can avoid logging into FaceTime Beta on a computer you don’t own/fully trust until an official update or final version are released.