--- title: Pre-register for the eBook --- ![Untitled design (2)](https://resources.smartnumbers.com/hs-fs/hubfs/Untitled%20design%20(2).jpg?width=794&name=Untitled%20design%20(2).jpg "Untitled design (2)") # Introduction to network authentication In this eBook,  Opus introduces the concept of network authentication and fraud detection. Register your interest to be sent the eBook when it's published in October 2021. - [Terms & Conditions](https://smartnumbers.com/terms/) - [Cookie Policy](https://smartnumbers.com/cookie-policy/) - [Privacy Notice](https://smartnumbers.com/privacy-notice/) ![image-IIP-Platinum-360px (1)](https://resources.smartnumbers.com/hs-fs/hubfs/image-IIP-Platinum-360px%20(1).png?width=360&name=image-IIP-Platinum-360px%20(1).png "image-IIP-Platinum-360px (1)") Copyright © 2026 Resilient Ltd, trading as Smartnumbers, registered in England and Wales No: 01403177 ![image-IIP-Platinum-360px (1)](https://resources.smartnumbers.com/hs-fs/hubfs/image-IIP-Platinum-360px%20(1).png?width=360&name=image-IIP-Platinum-360px%20(1).png "image-IIP-Platinum-360px (1)")