Halodoc processes over 300k file uploads daily in healthcare workflows and built a multi-layer validation framework to block malicious files. The system uses Apache Tika for content-based MIME detection, Apache PDFBox for PDF structure scanning, Apache Commons CSV for formula injection detection, and Java ZipInputStream for
Table of contents
IntroductionUnderstanding the Threat LandscapeOur Multi-Layer Validation FrameworkReal-World Validation WalkthroughAdd a False Positive Handling SectionSecurity Framework Integration ArchitecturePerformance at ScaleKey Security Principles We FollowTradeoffs and Design ConsiderationsConclusionJoin UsAbout HalodocSort: