[iMore.com]

Ahead of its iOS 8 roll-out on Wednesday, Apple has revived the two-factor authentication security system for iCloud. Two-factor authentication will bring increased security to iCloud by allowing users to tie in a verified SMS number or connected device, making it harder for an unauthorized user to hack an iCloud account even if they have your password or log-in credentials.

Full story from the iMore Blog...

[zerog46]

Also per Apple.

Sign in securely with app-specific passwords
If you use iCloud with any third party apps such as Microsoft Outlook, Mozilla Thunderbird, or BusyCal, you can now generate app-specific passwords that allow you to sign in securely even if the app you are using does not support two-step verification.
To generate an app-specific password:
Sign in to My Apple ID (https://appleid.apple.com)
Go to Password & Security
Click Generate App-Specific Password
App-Specific passwords will be required starting on October 1, 2014.

[Just_Me_D]

I just got an email from Apple in regard to this...