My name is Jakob Kreuze (/​ˈdʒeɪkəb ˈkɹuz/ and /​ˈjaːkɔp ˈkʁɔʏ̯tsə/ are both acceptable pronunciations), and I'm a 24 year-old cybersecurity professional living in the Commonwealth of Virginia. Outside of work, I like to program and tinker with free software, reverse engineer things, and hunt for security vulnerabilities. In the past, I've used the traditional definition of "hacker" to describe myself. These days, the vernacular meaning is a bit more accurate.

On the softer side, I love cooking (and eating) delicious food, running long distances, lifting weights, and playing old video games.

The best way to contact me is by email at zerodaysfordays (at) ‌​‌‌‌​‌‌‍‌​‌‌​​​​‍‌​‌‌​​​‌‍‌‌​‌‌​​​‍‌​‌​‌​‌‌‍‌‌​‌‌‌‌‌‍‌​‌‌‌​​‌‍‌​‌​‌​‌​‍‌​‌‌‌‌​​‍‌​‌‌​‌​​‍‌​‌‌​‌‌​‍‌​‌‌​​​‌‍‌​‌‌‌​​​‍‌‌​‌‌‌‌‌‍‌​‌​‌‌​​‍‌​‌​‌‌‌‌‍‌​‌‌‌‌‌​‍‌​‌‌​​‌​‍‌‌​‌‌‌‌‌‍‌​‌‌​​‌​‍‌​‌‌‌​‌​sdf.org. My GPG key fingerprint is 6581 A4FC 404F 6434 AEA3 008C 45ED 4DC3 05BA DA33. I'm also on Signal as @incellebrite.666.

I have a more detailed biography as well.

This is my personal website for showcasing the things I make. Currently, that is long-form writing in the form of blog posts.

The website is built using the Haunt static site generator, but features some dynamic components that use Guile's (http server) module. The source code is available on Sourcehut. It started in 2015 as tsar-fox.com and was written in Python using the Flask web framework. In late 2018, I dropped that code base and began using the Hugo static site generator until mid 2019 when I began using Haunt. The Wayback Machine has several snapshots reaching back to December of 2016.

I am not currently aware of any attempts to censor this website. Nonetheless, I maintain mirrors on Tor and I2P should you have difficulty accessing my writing in your locality.