Stott Security

Content relating to the Stott Security Add-On for Optimizely CMS 12, the leading security header manager.

77,000+
Downloads on nuget.org
36,000+
Downloads on nuget.optimizely.com
4.0.1
Current Version

Stott Security is an Add-on for Optimizely CMS that allows a CMS Administrator to manage security headers that are used to protect the CMS website without requiring a code deployment. This Add-on is free to use and is covered by an MIT License. If you wish to support the ongoing development of this Add-on, then please feel free to buy me a coffee.

Key Features

  • User Friendly Interface: Manage individual domains and what permissions you grant them on a domain by domain basis.
  • Searchable: Search by domain or filter by permission to fully understand what permissions have been granted.
  • Reporting: Supporting internal and external reporting endpoints, understand violations either directly within the add-on or in a third party service.
  • Violation Handling: Add blocked domains straight into your CSP straight from the violation report screen
  • Agency Allow List: Automatically update your Content Security Policies across multiple instances based on a centrally managed allow list.
  • Supports Nonce: Supports nonce attributes on script and style tags. Automatically applied for traditional CMS pages, must be applied in UI code for Headless solutions.

  • User Friendly Interface: Manage individual directives in an easy-to-use interface.
  • Searchable: Search by domain or filter by permission to fully understand what permissions have been granted.

  • CORS Support: Manage the domains that are allows to make CORS requests into your website.
  • Native: Hooks into the Microsoft’s built in .NET CORS middleware to protect your CMS with minimal effort.
  • Optimizely Headers: Quickly add known Optimizely headers for the Content Delivery and Definition APIs at the click of a button.

  • User Friendly Interface: Manage all of your classic response headers in a nice easy to manage interface.
  • Supported Headers:
    • Cross-Origin-Embedder-Policy
    • Cross-Origin-Opener-Policy
    • Cross-Origin-Resource-Policy
    • X-Content-Type-Options
    • X-XSS-Protection
    • X-Frame-Options
    • Referrer-Policy
    • Strict-Transport-Security (HSTS)

Coming in version 4!

  • User Friendly Interface: Manage your security.txt files in an easy to interface that is familiar to users of Stott Robots Handler.
  • Multi-Domain / Host Support: Write a single security.txt file for your entire CMS, or create them by site or even specific host.

  • Previews: A preview screen that will show you your complete collection of compiled headers.
  • Headless Support: APIs can be consumed by your headless solution to serve headers using middleware in well known headless providers.
  • Import/Export: Export all your settings to back them up before making sweeping changes and import them to roll them back to a known state.
  • Fully Audited: All changes made within the add-on are audited complete with field value changes.
  • Audit Reporting: Review all changes made to settings by user, date or record type.
  • Validation: Client side and server side validation with visual feedback to prevent configuration errors

Articles

Stott Security Version 4

Published: 16th January 2026

A summary of all new and updated functionality changes that have been introduced in version 4 of the Stott Security add-on for Optimizely CMS 12.

Development Optimizely Stott Security

Optimizing Content Security Policies to Stay Within HTTP Header Limits

Published: 1st August 2025

Discover how to audit, reduce, and optimize Content Security Policies. Helping you stay within browser and CDN header size limits.

Development Optimizely Stott Security

Stott Security Version 3

Published: 8th April 2025

A summary of all new functionality and changes that have been introduced to the Stott Security v3 add-on for CMS 12.

Development Optimizely Stott Security

Stott Security Version 2

Published: 17th May 2024

A summary of all new functionality and changes that have been introduced to the Stott Security v2 add-on for CMS 12.

Development Optimizely Stott Security

Adding CORS Management to Optimizely CMS 12

Published: 8th October 2023

Adding Cross-origin Resource Sharing response headers to the Stott Security Add-on for Optimizely CMS 12.

Development Optimizely Stott Security