Cyber Talk-10 Cloudflare Built the Internet’s Immune System. Then It Turned on Itself.

This analysis explains how Cloudflare evolved into a near‑global "internet immune system" and how that architectural centralization both created its moat and produced systemic risk: it recounts the 2013 Spamhaus DDoS that validated Cloudflare's model, summarizes massive DDoS activity and botnet trends, and describes a series of 2025 operational failures — most notably a Nov 18, 2025 ClickHouse permissions change that corrupted a bot-detection feature file and caused ~90 minutes of widespread outage affecting about one in five webpages — then draws lessons about visibility-based moats, single‑point-of‑failure risks, and the company's AI-era positioning.