Secure Upload Pipeline

Production-grade file upload handling with validation, malware scanning, and duplicate detection.

When to Use This Skill

• Building file upload endpoints that handle untrusted input
• Need malware scanning before processing files
• Want to prevent duplicate file processing
• Handling concurrent uploads of the same file

Core Concepts

File uploads are attack vectors. The solution is a multi-stage validation pipeline that fails fast and checks cheap things first:

Upload Request
    ↓
[1] Size + Type Check (instant)