This recipe is part of the series Learn CIAM by example: Four recipes to improve your app’s security and UX. You can learn more about the series by downloading our four recipes in a cookbook format. In this recipe, you learn how to use CIAM to prevent fraudulent sign-ups and account takeovers. Fraudulent activity on the web can happen on any application or channel you can think of. New technologies — from data lakes to cloud ETLs and AI — are drastically increasing the volume of consumer data stored and processed by companies. While this leads to highly personalized services (and customer delight), it also raises concerns for people about how you keep their data safe and private when they sign up and use your services. When it comes to Identity, fraudulent app activities typically happen through two vectors: fraudulent sign-ups and account takeovers. In fraudulent sign-ups.