Some time ago I read an excellent article by Scott Helme on https://scotthelme.co.uk/hardening-your-http-response-headers/. If you want to learn more about these headers I suggest you read the article yourself. I've added security headers to this website and want to show you how it was done.
I've used the https://github.com/BePsvPT/laravel-security-header package for adding security headers.
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