FileUpload1 💡 Implementing a Whitelist-Based Secure File Upload Validator When building file upload features for public or government systems, simple extension checks are not enough. Security audits often require whitelist-based extension validation, double-extension blocking, and magic-byte verification. In this post, I’ll share how I implemented a secure file upload validator inSpring Boot + Java, inspired by real-world public sector project requirements.1️⃣ Design .. 2025. 10. 31. 이전 1 다음