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API Shield

Protecting APIs from abuse using sequence learning and variable order Markov chains

At Cloudflare, we protect customer APIs from abuse. This is no easy task, as abusive traffic can take different forms, from giant DDoS attacks to low-and-slow credential stuffing campaigns. We now address this challenge in a new way: by looking outside typical volumetric measures and using statistical machine learning to find important API client request sequences.

Welcome to Security Week 2023

Welcome to Security Week 2023. This week we’ll demonstrate how Cloudflare is making it as easy as possible to shift from protecting applications, to protecting employees, and making sure they are protected everywhere.

Landscape of API Traffic

More than 50% of all traffic processed by Cloudflare is API-based, and it’s growing twice as fast as traditional web traffic. This growth calls for the development of dedicated security solutions.

Introducing API Shield

Of the 18 million requests per second that traverse Cloudflare’s network, 50% are directed towards APIs. Cloudflare is making it simple to secure APIs through the use of strong client certificate-based identity and strict schema-based validation.