Microsoft: Azure DDoS Attack Amplified by Cyber-Defense Error

Microsoft experienced a large DDoS attack that caused an unexpected traffic spike and service degradation across multiple Azure offerings (including App Services, IoT Central, Application Insights, CDN/Front Door, and portions of Microsoft 365) for about eight hours; Microsoft says an implementation error in its DDoS mitigation controls amplified the outage and will publish a preliminary post‑incident review. The report also contextualizes rising DDoS trends, discusses common mitigation mistakes (misconfigured rate limiting, load balancing, firewall rules, scaling issues), and recommends real-time traffic analysis, redundancy, and coordinated incident response.