Secure File Uploads: Seven Checks and Why Each One Exists

Part 3 of 4 — Laravel Architecture Patterns for Production ~9 min read · Security · Middleware · File handling A file upload is the moment you hand control to an untrusted user. Everything else in your application — form inputs, query parameters, JSON — is text. You validate it, sanitize it, store it in a database. A file upload is arbitrary binary data from a source you cannot verify, about to be written to your filesystem. The surface area is different. The failure modes are different. The con