Recent posts about Little Snitch

macOS 10.15.1 Update Fixes Kernel Prelinking

The initial release of macOS Catalina caused trouble for a lot of Little Snitch users. Updating an existing version of Little Sntich would almost always lead to a dreaded “Version Mismatch” error being shown after restarting your Mac. We documented »

How Kernel Prelinking Works on macOS Catalina (or not)

Update on October 30, 2019: This issue is fixed in macOS 10.15.1.In this article we’d like to outline some technical details about how the installation of a kernel extension works on macOS Catalina, about potential pitfalls »

The Story Behind CVE-2019-13013

This blog post targets fellow software developers. It’s a story of how it could happen that we shipped a version of Little Snitch with a serious vulnerability and, more importantly, what we can learn from it. It all began »

All That Glitters is not Gold

In February 2019, security experts from Trend Micro published an article about a new variety of malware. This particular attempt gained additional attention because it was the first time that cybercriminals tried to run an .exe file (Windows executable) on »

About the Issues with Code Signing Checks in Little Snitch

A security vulnerability was recently disclosed by Josh Pitts, a security researcher at Okta. This vulnerability affects third-party macOS apps that check the code signatures of other apps by tricking them into treating a maliciously crafted fat binary as coming »

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