Microsoft Updates Edge Browser To Harden Against DLL Injection

On the 12th of November Microsoft began rolling out Windows 10 Build 10586 (also known as Version 1511). This was the first major update made available for Windows 10. Included in this update was an improved version of Microsoft Edge, the default browser of Windows 10.

For most consumers, this update will be delivered automatically to their PCs. For businesses and large organizations using the new Windows Update for Business they should be able to choose a time when they wish to deploy this update more widely to the company’s employees.

What’s The Main Security Improvement in This Update?
In the updated version of Microsoft Edge, known as EdgeHTML 13, DLLs (Dynamic Link Libraries, defined) are no longer permitted to load within Edge. DLLs are loaded into a Windows application using a technique known as DLL injection. The technique of DLL injection is explained in more detail here and here. It is this technique that Edge has been hardened against to prevent it succeeding.

Why Was This Change Made?
If an unauthorized DLL is loaded into a web browser, it can do such things as displaying un-wanted adverts (such as the type previously discussed by Google) or installing unnecessary toolbars that may attempt to re-direct your web searches from your preferred search engine to another search engine in order to benefit from increased usage (and possibly increased revenue when adverts are displayed among those search results). Such unwanted adverts and/or toolbars annoy and distract users and make their web browser less user friendly.

If I’m a Microsoft Edge user, how will this benefit me?
If you like using Microsoft Edge on Windows 10, this change will mean that it will be harder for adware and malware to be loaded into your browser either for malicious purposes or to simply display adverts. This means that your web browser is more likely to work the way you prefer and you can simply concentrate on achieving what you would like to do.

I welcome this change which makes every day browsing for Microsoft Edge users safer. Thank you.

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