ericlaw

Defensive Technology: Exploit Protection

September 2025 tl;dr: You probably should not touch Exploit Protection settings. This post explains what the feature does and how it works, but admins and end-users should probably just leave it alone to do what it does by default. Over the last several decades, the Windows team has added a stream of additional security mitigationContinue reading “Defensive Technology: Exploit Protection”

Defensive Technology: Windows Filtering Platform

Last November, I wrote a post about the basics of security software. In that post, I laid out how security software is composed of sensors and throttles controlled by threat intelligence. In today’s post, we’ll look at the Windows Filtering Platform, a fundamental platform technology introduced in Windows Vista that provides the core sensor andContinue reading “Defensive Technology: Windows Filtering Platform”

Runtime Signature Checking Threat Model

Telerik developers recently changed Fiddler to validate the signature on extension assemblies before they load. If the assembly is unsigned, the user is presented with the following message: In theory, this seems fine/good– signing files is a good thing! However, it’s important to understand the threat model and tradeoffs here. Validating signatures every time aContinue reading “Runtime Signature Checking Threat Model”

Spring Break

Spring break is one of the best times to be in Texas. The weather’s usually nice, and outdoor fun things to do aren’t miserably hot. This year, the kids are obsessed with roller coasters, so we bought Season Passes to Six Flags (which also includes a variety of other theme parks and water parks). ThusContinue reading “Spring Break”

Debugging Chromium

A customer recently complained that after changing the Windows Security Zone Zone configuration to Disable launching apps and unsafe files: … trying to right-click and “Save As” on a Text file loaded in Chrome fails in a weird way. Specifically, Chrome’s download manager claims it saved the file (with an incorrect “size” that’s actually theContinue reading “Debugging Chromium”