---
title: "HTTP Strict Transport Security Header (STSH)"
slug: "http-strict-transport-security-header-stsh"
updated: 2023-01-19T21:20:04Z
published: 2023-01-19T21:20:03Z
canonical: "docs.catchpoint.com/http-strict-transport-security-header-stsh"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.catchpoint.com/llms.txt
> Use this file to discover all available pages before exploring further.

# HTTP Strict Transport Security Header (STSH)

## 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.