Overview
The HTTP Strict Transport Security Header (STSH) is a web application security feature enabled via a special response header ("Strict-Transport-Security").
How it works
Once the client's browser receives a Strict Transport Security response header, future requests to the targeted domain will be redirected from HTTP to HTTPS, meaning no further information can be transferred through HTTP.
Supported Monitors
Currently support for STSH is available with the Chrome monitor, while support for STSH in the Emulated monitor is in progress.