About Browser Hardening Toolkit

Overview

What the Browser Hardening Toolkit actually builds

The Browser Hardening Toolkit brings several browser specific assistants into one place. Each assistant generates a script that applies opinionated but readable security and privacy controls for a particular browser and operating system combination.

You choose an operating system, then pick a browser baseline. The toolkit then builds a local script that typically:

Targets a specific browser, such as Edge, Chrome, or Firefox.
Turns on stricter tracking, cookie, and permission settings where possible.
Adjusts TLS and certificate behavior toward more modern, safer defaults.
Reduces telemetry and background data collection where supported.
Uses a repeatable configuration file or registry based approach instead of one computer at a time clicks.

The toolkit focuses on browser level settings on your local device. It does not change your router, VPN, DNS resolver, or any account level settings you have with Google, Microsoft, or Mozilla.

Script based baselines Windows 11 and macOS support Edge, Chrome, Firefox profiles Local only, no cloud calls

Audience

Who this toolkit is for (and where to be careful)

This toolkit is intended for people who want stronger browser defaults on systems they control, without becoming full time policy engineers. It is especially helpful when you rebuild machines often or manage a small number of devices for other people.

Good fit

Home users who want tighter browser privacy on laptops and desktops.
Independent professionals securing a few Windows or macOS devices.
Small business owners who want consistent browser settings for a compact team.
Security minded users who like copy paste scripts they can version control.

Use with caution

Corporate or school managed laptops that already receive browser policies.
Shared household machines where others may dislike stricter permissions.
Environments governed by formal change control, GPOs, or MDM baselines.

Never bypass organizational policies, device management profiles, or security baselines with these scripts. Treat this toolkit as a helper for systems you are responsible for and have explicit permission to configure.

How it works

How the browser assistants generate and apply their scripts

The Browser Hardening Toolkit runs entirely in your browser. When you open one of the baseline assistants and click a button such as Generate script, the tool assembles its output locally in the page. You can copy or download that script and review it before running anything.

Windows 11 assistants

Edge, Chrome, and Firefox assistants generate PowerShell scripts aimed at Windows 11 devices.
These scripts usually write browser policies by creating registry keys or enterprise policy files such as policies.json for Firefox.
You typically save a script as something like edge-baseline-win11.ps1, chrome-baseline-win11.ps1, or firefox-baseline-win11.ps1.
To run a script, you open PowerShell as Administrator and use a command similar to .\edge-baseline-win11.ps1 after you have read through it.

Some assistants also include simple backup and rollback behavior so you can test settings on a non critical machine first, then migrate a known good configuration forward.

macOS assistants

macOS Chrome and Firefox assistants generate bash scripts that write policy files and related folders on disk.
These scripts take care of file paths that can be awkward to remember and add comments for each major block.
You typically save a script with a name like chrome-baseline-macos.sh or firefox-baseline-macos.sh.
Before running, make the script executable with chmod +x chrome-baseline-macos.sh, then run something like sudo ./chrome-baseline-macos.sh on a test system.

The macOS baselines are intended to work alongside the operating system’s privacy controls, not to replace regular browser updates or per site decisions about cookies and permissions.

Whether you are using Windows or macOS, the core idea is the same. The toolkit helps you move from one off clicks in settings menus toward a repeatable script that documents your intent. You always remain in control of what you apply, where you apply it, and when you choose to roll changes back.

Next steps

Open the toolkit or print these notes

When you are ready, open the Browser Hardening Toolkit, pick your operating system, and choose a browser baseline to start with. Use this about page as a reference while you review each script line by line and decide how strict you want to be on your own devices.

This tool includes a curated subset of DISA STIG controls selected for real world use by home users, entrepreneurs, digital nomads, and small businesses. It is not a full STIG implementation but a practical baseline designed to reduce your attack surface.

Important notice & Legal disclaimer

This Browser Hardening Toolkit and its companion pages run entirely in your browser. Your selections and the generated scripts are not sent to CyberLife Coach, to browser vendors, or to any third party. The output is a generic starting point for browser security and privacy controls and is provided for educational and informational use only. It is not a substitute for professional advice and does not guarantee compliance with any standard or policy. Always test in a safe environment, verify every line, and ensure you have reliable backups before making changes. Do not apply these settings to employer or school managed devices without explicit approval, and do not bypass existing GPOs, MDM profiles, configuration profiles, or enterprise change control processes.

No warranty or guarantees Local only, no data leaves this device