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Blogs | INSIGHTS | November 15, 2013

heapLib 2.0

Hi everyone, as promised I’m releasing my code for heapLib2. For those of you not familiar, I introduced methods to perform predictable and controllable allocations/deallocations of strings in IE9-IE11 using JavaScript and the DOM. Much of this work is based on Alex Sotirov’s research from quite a few years ago (  The zip file contains:  heapLib2.js => The JavaScript library that needs to be imported to use heapLib2 heapLib2_test.html => Example usage of some of the functionality that is available in heapLib2 => A Python script…

Chris Valasek
Blogs | INSIGHTS | August 23, 2013

IE heaps at Nordic Security Conference

Remember when I used to be the Windows Heap guy? Yeah, me neither ;). I just wanted to give everyone a heads up regarding my upcoming presentation “An Examination of String Allocations: IE-9 Edition” at Nordic Security Conference ( The presentation title is a bit vague so I figured I would give a quick overview. First, I’ll briefly discuss the foundational knowledge regarding heap based memory allocations using JavaScript strings in IE-6 and IE-7. These technics to manipulate the heap are well documented and have been known…

Chris Valasek

Commonalities In Vehicle Vulnerabilities

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