Deep Tech
Deep tech articles from my own servers and code: Linux, cybersecurity, privacy, networking, automation scripts, Rust and Kodachi OS. The newest come first; the business side is in the business blog.
How to protect your WordPress external links
How I encrypted WordPress external links with WP No External Links and mcrypt, why it breaks on PHP 7.2 and newer, and a tested OpenSSL version for PHP 8.
The little secret on Digital Forensics
A categorised guide to digital forensics tools for disk imaging, analysis, memory, mobile, network and password recovery, updated for October 2026.
Linux world: the guide you need
A Linux server command reference: packages, monitoring, logs, repair, networking, firewall, security, Exim mail and MySQL, updated for 2026.
Extracting SSL Fingerprints
Get the SSL certificate fingerprint of any site with my Perl, Bash and PHP scripts, updated for OpenSSL 3 and PHP 8 with SHA-256 instead of SHA-1.
Ways to deliver your messages securely and anonymously
Which encrypted chat, email and anonymous mail tools still work in 2026, which 2013 services closed, and how to send messages securely and anonymously.
Cloud storage solutions: where to store and what to use
My list of tools for secure cloud backup: encrypt before upload, sync and self hosted cloud options, disk wiping, and which 2013 services closed or changed.