Harrison's Sandbox

Exposing covert surveillance backdoors in children’s smartwatches

This blog post provides a technical description of how my colleague Erlend and myself discovered a backdoor in a smartwatch made for children. The device is a wearable smartphone, and

802.11p V2X Hunting

Autonomous vehicles are becoming closer to reality, and the technologies developed to support them have already started hitting the market. I set out to see if I could find any real-world deployments of these systems.

Building a Passive IMSI Catcher

This post walks through the processes of building a passive IMSI catcher. The purpose of this post is to be educational - to highlight the ease of which these devices can be built, and to practically show how privacy is already being compromised today.

Norway Amateur Radio Repeater Map

This is a map of amateur radio repeater stations in Norway. Data was obtained from norvhf.no, and last updated 3. June 2020.

Your ISP is Probably Spying On You

A while back I decided to no longer use the router given to me by my ISP. You may want to consider doing the same.

CAN On the Raspberry Pi

This post walks through setting up a CAN controller on the Raspberry Pi. My goal is to help demystify the process, and provide simple instructions that a relative beginner should