Many countries are in the process of rolling out digital COVID-19 certificates. In Europe, most of these appear to be in the form of a QR code. I recently received my own certificate, and was curious about the data it contained, as well as the supporting infrastructure around certificate verification.

Reverse engineering a children’s smartwatch, and discovering some unexpected “features”.

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.

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.