HTTP Headers: Mitigate Fingerprint Web Application Framework
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Install/configure https://www.drupal.org/project/remove_http_headers
Ref:
- OWASP: Pen test: WSTG-INFO-08: Fingerprint Web Application Framework
- OWASP: HTTP Headers Cheat Sheets: https://cheatsheetseries.owasp.org/cheatsheets/HTTP_Headers_Cheat_Sheet.html