About

I'm johlem — an IT Security Officer based in Luxembourg. I work inside a regulated financial entity, where the interesting problems live at the intersection of detection engineering, offensive tradecraft, and European compliance regimes (DORA, NIS2, CSSF circulars).

This blog is where I write things down. Expect lab notes, detection write-ups, OSCP-adjacent offensive content translated into defender-useful artifacts, and the occasional compliance-meets-technical piece for people who have to explain firewalls to auditors.

Elsewhere

• johlem.net — consulting practice.
• cli.johlem.net — small command-line tools.
• lab.johlem.net — project index.
• cyberramen.com — free security tools.
• johlem.com — photography and music.
• GitHub.

Contact

Engagement enquiries and private correspondence: hello@johlem.net.

About this site

Pure HTML and a single CSS file. No framework. No JavaScript. No build step. No trackers, no third-party scripts, no analytics. Total page weight under 80 KB. The source is intentionally readable.