How to Use Super Duper Secure Mode in Microsoft Edge

How to Use Super Duper Secure Mode in Microsoft Edge

Microsoft aims to bring “Super Duper Secure Mode” to its Edge browser for a more secure browsing experience. With this oddly named mode, Edge will improve security levels while you browse the internet without being on the edge of the seat.


Super duper secure mode Microsoft Edge featured

Now the question arises as to how this secure mode Microsoft Edge Super Duper provides enhanced security? First, it disables an important optimization feature, helping Edge browser provide additional layers of security.

This new mode secures your navigation without sacrificing performance. It all sounds intriguing, doesn’t it? And if you’re security-conscious, but still aren’t sure, read on to learn more about this mode.

Here’s how to use Microsoft Edge Super Duper secure mode.

What is Super Duper Secure Mode

Microsoft continues to add features to improve the performance of its Edge browser and compete with Google Chrome. At the time of writing in August 2021, the Super Duper Secure Mode feature is still in its experimental phase. This means that you will run into issues and inconsistencies if you enable this mode.

Enabling Super Duper Safe Mode will resolve JavaScript vulnerabilities, which the attacker primarily targets in the Edge browser. To mitigate this and make it difficult to execute malicious code, the browser will use other advanced security features such as Windows Abitrary Code Guard (ACG), Control Flow Guard (CFG), and Intel Control-flow Enforcement Technology (CET).

Don’t worry, the long-term goal of this feature is to allow JavaScript on websites to function normally without compromising the security and performance of the Edge browser.

Super secure mode


Super secure mode

Johnathan Norman, head of Microsoft Edge Vulnerability Research, noted in a blog post that JIT-related security issues accounted for about 45% of all V8 compute vulnerabilities in 2019. Super Duper Secure Mode triggers the Intel’s Control Flow Application (CET) technology, which protects your PC against common malware.

To put it plainly, Edge browser will allow you to turn off the JavaScript engine and rely on other security measures. So while this mode has several technical challenges ahead of it, you can give it a spin and be part of the tests.

Now let’s see how to enable or disable Super Duper secure mode in Edge.

How to enable Super Duper secure mode on Microsoft Edge

Before you begin, it’s important to note that this security feature is only available on Microsoft Edge’s Experimental Channel, i.e. Beta Channel, Dev Channel, or Canary Channel. This means that it may take a few weeks or months to arrive at the stable version.

Go to the official Microsoft Edge download page and download one of the experimental versions of the browser.

Microsoft Edge development channels


Microsoft Edge development channels

Step 1: In the browser’s address bar, type the address below and press Enter:

edge://flags

Flags on board


Flags on board

2nd step: In the search bar, enter Super Duper Secure Mode and press Enter.

Find a Microsoft Edge indicator


Find a Microsoft Edge indicator

Step 3: Click the drop-down menu to change Default to On.

Enable sdsm flag


Enable sdsm flag

Step 4: Click the Restart button in the lower right corner of the Microsoft Edge indicator page to restart the browser to apply the changes.

Restart Microsoft Edge


Restart Microsoft Edge

How to turn off SDSM mode on Microsoft Edge

If Edge’s performance or the browsing experience isn’t working for you, you can turn this mode off. Disabling Super Duper secure mode on Microsoft Edge is equivalent to enabling the feature.

Step 1: Type below in the address bar of Microsoft Edge browser and press Enter:

edge://flags

2nd step: Look for Super Duper Secure Mode in the search bar and press the Enter button.

Step 3: Click the drop-down menu to select Disabled.

Disable sdsm


Disable sdsm

Step 4: Restart the Edge browser by clicking the Restart button that appears in the lower right corner to apply the change.

Restart edge


Restart edge

Advantages and disadvantages of Super Duper secure mode

Although this mode is still in the experimental phase, there are a few positives and negatives that you should keep in mind. Speaking of the pros, Microsoft Edge Super Duper Secure Mode is designed to provide enhanced security while browsing. User data and privacy will be protected by advanced security layers to make the browsing experience less worrying.

Additionally, you will not experience any significant performance or stability issues with the browser after enabling this feature. Another key benefit of this mode is that it will reduce reliance on frequent security updates. The reason is that it would remove most of the V8 bugs due to Just In Time by disabling it.

Advantages and disadvantages


Advantages and disadvantages

On the other hand, since this mode is still in the experimental phase, you will encounter some hiccups. The sites you usually visit will not feel any difference in your browser. Thus, this feature may go unnoticed by most of the users. However, be careful when browsing sites known to be adware pumping.

Additionally, disabling Just In Time (JIT) will make the browser a bit slower than usual, as Just In Time makes website code execution faster. So if you are desperately looking for an ultra-secure browsing experience, you should give this feature a try right away.

Safe navigation on the outskirts

Although Microsoft announced this new feature for Microsoft Edge’s experimental channels, there is no guarantee that they will bring it to the stable version. Hopefully, with some positive feedback from security-conscious users, this super-security mode will see the light of day in the future.

Last updated on August 16, 2021

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