What is RIDL and Why Should you Care? In 2019 researchers from Vrije Universiteit Amsterdam shared details of a new side-channel attack which they coined “Rogue In-Flight Data Load” (RIDL). It was...

Introduction Today, we’re excited to announce a new security protection in Microsoft Edge and other Chromium-based browsers that defends against attackers being able to leverage an exploit in a Re...

Introduction Hello and welcome to the first in a new series of blog posts in which we will discuss some issues that are commonly reported through our Researcher Incentive (Bug Bounty) Program, but...

Introduction In this blog post, we will share the story about how we discovered a critical stack corruption bug that has existed in Windows for more than 20 years (CVE-2023-36719). The bug was fou...

As we recently published on the Microsoft Edge Dev blog, Adobe and Microsoft are enhancing the PDF experience and value users have come to expect in Microsoft Edge. Adobe brings an unrivalled bre...

Introduction Memory corruption issues in the browser process are typically some of the most severe issues in Chromium and browsers that are based off it. Such issues can include use-after-free (UA...

In a previous blogpost it covered and mentioned automation and how it is great at finding memory issues. We also got some feedback to expand on fuzzing, so this post will cover how we came to devel...

Introduction Today, we’re excited to announce some improvements to our experimental security feature in Microsoft Edge 98. This is a continuation of our previous post. If you have not read it, we ...

I usually write about achievements in the form of a browser bug that I found interesting, in hopes that someone reading will find it useful in their own bug hunting pursuits. However, in this blog ...

Introduction The VR team is experimenting with a new feature that challenges some conventional assumptions held by many in the browser community. Our hope is to build something that changes the mo...