What is HSTS?

Difficulty: unrated

Source: bregman-arie/devops-exercises by Arie Bregman

Answer

HTTP Strict Transport Security is a web server directive that informs user agents and web browsers how to handle its connection through a response header sent at the very beginning and back to the browser. This forces connections over HTTPS encryption, disregarding any script's call to load any resource in that domain over HTTP.