[Tip] Enable “Super Duper Secure Mode” in Microsoft Edge

The newer versions of Microsoft Edge web browser (version 96 and later) come with a brand new feature called “Super Duper Secure Mode” (SDSM) which has been implemented in the web browser to make it secure and safer. In this article, we’ll tell you how to activate and enable new “Super Duper Secure Mode” in Microsoft Edge web browser.

What is Super Duper Secure Mode in Microsoft Edge?

Super Duper Secure Mode is a special feature developed by Microsoft Edge team which can be used by Edge users to improve the security and get a secure browsing experience.

Super Duper Secure Mode was under development and testing phase since a few months and now the feature has been added to the public stable version of Microsoft Edge, so now anyone can enjoy Super Duper Secure Mode functionality.

How does Super Duper Secure Mode Work in Microsoft Edge?

Super Duper Secure Mode disables JIT (Just-In-Time Compilation) in V8 JavaScript engine inside Microsoft Edge. JIT is also known as “Speculative Optimizer” and was developed in 2008 to speed up tasks in JavaScript. Microsoft research shows that most of the vulnerabilities and security risks occur due to V8 JavaScript engine. According to Microsoft, disabling JIT can remove almost half of the V8 bugs which means less frequent security updates or patches.

Disabling JIT in Microsoft Edge doesn’t impact the overall browser performance. According to Microsoft testing, most of the times disabled JIT didn’t cause any changes in the performance. But disabling the JIT results in significantly lower scores during JavaScript benchmarks. Microsoft tests showed a decline of 58%. But most of the times, users should not notice this impact while browsing websites.

Currently, Super Duper Secure Mode disables JIT (TurboFan/Sparkplug) and enables CET (Controlflow-Enforcement Technology, a new hardware-based exploit mitigation from Intel). Please note that Web Assembly is not supported at the moment. Microsoft has plans to slowly enable new mitigations and add Web Assembly support over the next few months.

How to Enable or Disable Super Duper Secure Mode Work in Microsoft Edge?

Super Duper Secure Mode comes disabled or turned off by default and interested users will need to manually activate it.

Microsoft is rolling out Super Duper Secure Mode in phases to Microsoft Edge 96 and later versions.

You can enable/disable Super Duper Secure Mode right now in Microsoft Edge using following 2 ways:

Enable or Disable Super Duper Secure Mode in Microsoft Edge Using Settings Page

If your Microsoft Edge web browser has received Super Duper Secure Mode, you can enable or disable it directly using Edge Settings page as mentioned in following steps:

1. Open Microsoft Edge browser and click on the 3-dots menu button present at the right-side of the toolbar. Now select Settings option from the main menu.

Alternatively, you can press ALT+F keys together to show Edge Menu and then press S key to open Settings page. You can also directly open Edge Settings page using edge://settings/ URL in address bar.

2. Now click on Privacy, search, and services tab in left sidebar and in right-side pane, scroll down and you’ll see Enable security mitigations for a more secure browser experience option. The option description shows “Turn on this mode to browse the web more securely and help protect your browser from malware. Choose the level of security you need”.

This is the actual option to enable or disable new “Super Duper Secure Mode” in Microsoft Edge.

To activate and enable new Super Duper Secure Mode in Microsoft Edge, set the toggle button given next to the option to ON.

To deactivate and disable new Super Duper Secure Mode in Microsoft Edge, set the toggle button given next to the option to OFF.

You can also customize the security level of Super Duper Secure Mode. “Balanced” level is perfect and will not affect websites functionality. “Strict” level will tighten the security but can cause issues while browsing websites.

You can also add desired websites to Exceptions list if your favorite website doesn’t work properly after enabling Super Duper Secure Mode.

Enable or Disable Super Duper Secure Mode in Microsoft Edge Using Flags Page

If you can’t see Super Duper Secure Mode present in Settings page, you’ll first need to manually add and activate it by modifying a hidden preference/flag as mentioned in following steps:

1. Open Microsoft Edge web browser and type edge://flags/ in address bar and press Enter. It’ll open the advanced configuration page.

2. Now type super in the “Search flags” box.

It’ll directly go to following option:

3. To add and enable Super Duper Secure Mode feature to your Edge browser, select Enabled from the drop-down box.

To disable Super Duper Secure Mode feature, select Disabled from the drop-down box.

4. Microsoft Edge will ask you to restart the browser. Click on “Restart” button to restart Microsoft Edge.

That’s it. You have successfully enabled/disabled Super Duper Secure Mode feature in Microsoft Edge.

Now you can turn on/off Super Duper Secure Mode using Edge Settings page as described in above mentioned method.

Also Check:

[Tip] How to Enable or Disable “Efficiency mode” in Microsoft Edge