Technical essays, architectural deep-dives, and practical guides at the intersection of code and design.
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A practical guide to building an AI-powered voicebot for visitor check-in at offices and buildings — covering STT/TTS pipeline, LLM conversation design, error handling, fallback strategies, latency optimization, and the real-world problems nobody warns you about.
A comprehensive guide to server security best practices covering SSH hardening, firewall configuration, TLS setup, privilege escalation prevention, logging, automated patching, and incident response for production Linux servers.
A battle-tested 12-week study plan for senior engineers targeting Staff/L6+ roles at Meta, Apple, Amazon, Netflix, and Google. Covers system design, coding, leadership, behavioral prep, and domain deep-dives with weekly schedules, resources, and practice problems.
A deep dive into Cross-Site Scripting (XSS) and Cross-Site Request Forgery (CSRF/XSRF) — how they work, real attack examples with code, and defense strategies every developer should implement.
A developer-focused guide to the OWASP Top 10 2021 — every vulnerability explained with real attack code, vulnerable code examples, and production-ready fixes for Node.js, Python, and Java.
A complete guide to HTTP cookie security — how cookies work under the hood, every security flag explained, real attack scenarios (session hijacking, CSRF, cookie tossing), and production-grade code for Express, Django, and Spring Boot.
A deep technical guide to format string vulnerabilities — how printf() becomes a read-write primitive for memory, exploitation techniques from info leak to arbitrary write to full RCE, real CVEs, and how to prevent them in C, C++, and modern languages.
A deep technical guide to buffer overflow attacks — stack overflows, heap overflows, integer overflows, and format string bugs. Includes memory layout diagrams, exploit code walkthroughs, and modern defense mechanisms like ASLR, NX, stack canaries, and memory-safe languages.
A deep-dive into SQL injection attacks — how they work, every type of SQLi (in-band, blind, out-of-band), real-world examples, and the complete defense playbook with code examples in Node.js, Python, Java, Go, and PHP.
A comprehensive guide to writing secure software in 2026, covering traditional OWASP vulnerabilities, AI-specific threats like prompt injection and model poisoning, secure SDLC practices, and practical code examples for building defense-in-depth applications.
How to architect and build an internal vulnerability detection system that developers don't hate. Covers SAST/SCA/secret scanning integration, PR-native workflows, false positive reduction via feedback loops, auto-fix generation, and the metrics that prove your system works.
A comprehensive guide to becoming a full-time freelancer in tech. Learn how to find clients, set your rates, build a portfolio, manage finances, and create a sustainable freelance business from scratch.