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Modern WAFs and antivirus scanners can detect simple shells. The Gunner approach uses (e.g., a PDF that is also a valid PHP web shell, or a GIF with embedded JS) to slip past both frontend and backend validation.

If you tell me this is (e.g., a CLI tool, a React component, or a back-end service), I can provide more specific technical descriptions or documentation. To tailor this text further: What is the primary platform (e.g., Web, Mobile, Desktop)? fileupload gunner project hot

: Only allow specific file types (e.g., .jpg , .pdf ). Never rely solely on the Content-Type header, as it can be spoofed. Modern WAFs and antivirus scanners can detect simple shells

Do not trust the Content-Type header, as it can be spoofed; instead, inspect the actual file contents to verify its type. To tailor this text further: What is the primary platform (e

Adjusts speed based on server heat and bandwidth availability.