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Notes on performance, systems, and craft.

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What I learned from a business awareness course

8 min read
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Abstract glowing five-stage business pipeline on a dark tech background
Abstract attack path from untrusted input to a powerful sink, crossing a broken trust boundary
September 9th, 2026 - 12 min read
What I learned studying product security as an engineer
Abstract data packets streaming between two glowing machine nodes
May 21st, 2026 - 11 min read
How data moves between two machines - for real production systems
Abstract path from source code glyphs through silicon to circuit voltage
April 8th, 2026 - 10 min read
How code runs on a computer - from program to bare-metal voltage
Abstract Linux OS stack with Tux silhouette and layered kernel planes
February 24th, 2026 - 11 min read
What is Linux? The operating system under the hood
Hamidul Islam at the standing desk

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