After Apple had already for some time activates the two-step verification for various services, hitherto lacked a hedge FaceTime or iMessage through the second authentication method.
Using the two-step verification is now also the two communication apps, FaceTime and iMessage, protected by an application-specific password and not the normal, belonging to the Apple ID password.
Who has the two-step verification enabled and then logs off and logs back into iMessage, will be asked to create an application-specific password on Apple’s website.
The safety of iCloud has been repeatedly criticized in the past, which Apple had introduced various safety precautions. For activation instructions can be found here. In addition, Apple now ships with many activities around the Apple ID email, to point out potential security issues.