Cyber bytes lock n rock is a yahoo usage software. It's used for different works, like you can check weather who is setting invisible on your yahoo ID. If you want to beyond lock the ID of your friend just right his ID in the victim section and enjoy to beyond him/her. For more benefits you have to download the software and when you will open this you will see the benefits of the software. If it has that much benefits, then why to wait any more. Just click on the download link and enjoy..!!!