
2/14/2013 · Matthew Prince
What this post added
This post details the evolution of Cloudflare's 'I'm Under Attack' Mode (IUAM). It highlights how the initial simple math challenge was reverse-engineered by malware named 'OutFlare', prompting Cloudflare to immediately deploy an updated, more complex version. The post also introduces the concept of 'proof of work' challenges, inspired by Bitcoin, as a future enhancement to combat sophisticated attacks, emphasizing Cloudflare's advantage in real-time updates and adaptation within its cloud service.