It’s amazing how tall the tower of computer abstraction is. Let’s explore a few of those layers here.

Yubikeys are great for security, but their benefits decrease somewhat when you leave them in your computer unattended. I also have login passwords that are way too long. How to solve these problems? Use a Yubikey to unlock your computer!

A look into call forwarding and MMI codes. On my cell provider, you can make calls automatically go to voicemail by dialing a single phone number. But how does this all work, anyway?

Don’t ignore webserver logs! Even a cursory glance can reveal some really interesting things about the internet.

An automatic mesh network that uses WireGuard under the hood. Why it’s good, and what I use it for.

Exposure notifications, or contact tracing apps, have failed. It’s been months since I wrote my previous post on contact tracing, and yet here’s what I see when I try to download an app.

Google and Apple’s exposure notification technology privacy-preserving, safe, and necessary. We need to embrace it.

A young upstart named TeaVM attempts to challenge bloated JavaScript web frameworks. Can it succeed?

TL;DR: Don’t put your mail server behind a CNAME.

The story of issue 217 – getting Tensorflow for AMD GPUs to work on an aging Ivy Bridge processor.

Two servers, one IP address. Featuring SNI proxies, SSH, and everyone’s favorite service to self-host: mail!