# Glazastov

Glazastov — André Glazastov

Canonical HTML: https://en.glazastov.com/
Markdown: https://en.glazastov.com/index.md

## OSINT: The Architecture of Public Information Leakage

A deep technical guide to open-source intelligence: from infrastructure enumeration and DNS reconnaissance through search engine dorking, repository mining, personnel graphs, and cloud exposure, to synthesis, tooling, and defensive countermeasures.

Published: June 29, 2026
HTML: https://en.glazastov.com/osint
Markdown: https://en.glazastov.com/osint.md

## Pointers and Memory: From the First Byte to the Last Cache Miss

A complete guide to how computer memory works, from what a byte is through virtual address spaces, heap bugs, and the MMU, all the way to CPU cache lines, false sharing, and memory ordering.

Published: May 25, 2026
HTML: https://en.glazastov.com/pointers-and-memory
Markdown: https://en.glazastov.com/pointers-and-memory.md

## Post-Quantum TLS: Why Your HTTPS Certificate Needs to Change

Shor's algorithm makes RSA and ECDSA obsolete the moment a cryptographically relevant quantum computer arrives. The migration to post-quantum HTTPS has two halves, and only one of them is going well.

Published: May 24, 2026
HTML: https://en.glazastov.com/post-quantum-tls-certificates
Markdown: https://en.glazastov.com/post-quantum-tls-certificates.md

## The Fourier Transform: A Visual and Mathematical Primer

From heat equations to signal processing — how Jean-Baptiste Joseph Fourier's century-old insight underpins nearly all of modern computing.

Published: November 15, 2024
HTML: https://en.glazastov.com/fourier-transform-explained
Markdown: https://en.glazastov.com/fourier-transform-explained.md

## Rust's Ownership Model: Memory Safety Without a Garbage Collector

Roughly 70% of severe security bugs in C and C++ are memory-safety violations. Rust's ownership system eliminates them at compile time, with no runtime collector — and the industry is finally moving.

Published: October 3, 2024
HTML: https://en.glazastov.com/rust-ownership-model
Markdown: https://en.glazastov.com/rust-ownership-model.md

## Distributed Consensus: From Paxos to Raft

Why agreeing on anything in a distributed system is surprisingly hard, and how Raft makes Paxos understandable without sacrificing correctness.

Published: September 20, 2024
HTML: https://en.glazastov.com/distributed-consensus
Markdown: https://en.glazastov.com/distributed-consensus.md