Explore the intricacies of fine-tuning the OWASP ModSecurity Web Application Firewall in this 37-minute conference talk from AppSecUSA 2017. Gain insights from Verizon Edgecast CDN's large-scale deployment of the OWASP Core Rule Set (CRS) across thousands of servers. Learn strategies for reducing alert noise levels by up to 90% using lesser-known ModSecurity features. Discover the challenges and benefits of upgrading from CRS 2.2.9 to 3.0. Understand how to balance risk management and false positives for diverse customer needs. Walk away with practical knowledge on optimizing CRS implementation, including anomaly scoring, safe exclusions, and leveraging paranoia mode in CRS 3.0. Benefit from the speakers' extensive experience in security analysis, incident response, and WAF consulting to enhance your own ModSecurity fine-tuning process.