Robert Sesek

Many bytes have been spilled the past few years over macOS’s declining software quality.

Over the past year I’ve been moving a lot of my personal infrastructure to connect via Tailscale.

Welcome to the next installment of infrequent deep dives into XNU, the kernel that powers Apple’s operating systems.

Digitally signing PDFs for documents is becoming increasingly commonplace for official documents.

Thanks to a FOIA request by Joseph Durso, pointed out to me by @manhack, there is an updated public copy of the Intelligence Community - Markings System Register and Manual that I last wrote about in 2014.

One of the most important tools I use every day is Todoist.

When working on software, it is sometimes necessary to debug very early in a program’s lifecycle (e.g., before the first line of main() when the dynamic loader is running).

Overview BezelServices is a subsystem on Mac OS X that acts as a glue layer between HID device drivers in the kernel, preferences that influence the behavior of those devices stored in CFPreferences, and a small UI surface that provides feedback about the…

Background Today I needed to securely wipe an old laptop in preparation for computer recycling.

This article publishes the Office of the Director of National Intelligence’s index of Intelligence Community Directives, which I requested under the FOIA.

This page contains a combined view of NSA’s Exceptionally Controlled Information (ECI) compartment lists from 2003 and 2013.

The NSA TURBULENCE program was first revealed in 2007 by the Baltimore Sun for being over-budget and poorly-managed 12.

When a recent beach vacation trip got rained out, we had to pass the time with board games.

After I posted the CAPCO v6 last month, some new information has come up regarding a few of the disclosed SCIs, specifically ENDSEAL.

Back in August 2013, I sent a FOIA request to the Office of the Director of National Intelligence, requesting the latest version of the Intelligence Community Authorized Classification and Control Markings Manual (also referred to as the CAPCO manual, for…