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 process email attachments automatically on Linux
A Bash script that extracts email attachments on a Linux server with uudeview, fed by a Gmail forwarding filter, with install steps for Debian and Fedora.
Make use of DigitalOcean and Vultr VPS APIs with a PHP wrapper
Control DigitalOcean droplets and Vultr servers from your own PHP panel: my 2014 wrapper code plus a PHP version for the current DigitalOcean API v2.
The art of port forwarding on Linux
Forward TCP ports on Linux with rinetd, socat, redir, HAProxy and iptables: commands, configs, startup units and monitoring scripts, updated for Debian 13.
Set up your machine as a coin miner and generate virtual currency
How I mined Litecoin with pooler cpuminer on Ubuntu, CentOS and Windows in 2013, and why CPU mining no longer pays in 2026 (Monero and XMRig instead).
Mitigating the BEAST, Heartbleed, DROWN and POODLE attacks on SSL/TLS: grade A+
How to get an SSL Labs A+ on Apache: TLS 1.2 and 1.3 only, strong ciphers and HSTS, plus fixes for the BEAST, Heartbleed, POODLE and DROWN attacks.
Sanitize data and prevent SQL injections in PHP
Sanitize user input and stop SQL injection and XSS in PHP: filter_var examples, htmlspecialchars, and PDO and MySQLi prepared statements for PHP 8.