Zoncolan: How Facebook uses static analysis to detect and prevent security issues

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Introduced Zoncolan, a static analysis tool that uses abstract interpretation to automatically detect security and privacy issues in Facebook's Hack codebase. Zoncolan analyzes code to identify potentially dangerous data flows from user-controlled inputs (sources) to sensitive operations (sinks), preventing thousands of potential security issues by analyzing the entire codebase in under 30 minutes and codifying rules to prevent future occurrences.