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Chaitanya Rahalkar

I’m a Software Security Engineer at Block Inc., specializing in cloud-native security pipelines and application security.

Previously at Meta and Praetorian, I focused on building secure systems and contributing to the security community through research and open-source projects.

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2026-07-06

The Uncomfortable Economics Behind the AI Boom

My perspective on the AI infrastructure arms race: why the technology can be real, useful, and transformative while the current economics still look fragile.

12 min read

technology AI Economics Infrastructure Markets

2026-02-21

eBPF for Security Monitoring: Kernel-Level Visibility Without the Overhead

A deep dive into using eBPF to build high-performance, kernel-level security monitoring tools — covering syscall tracing, network inspection, and intrusion detection with practical Python examples.

12 min read

linux kernel security eBPF Observability BCC Intrusion Detection Syscall Tracing

2025-04-30

How to Build Your Own Local AI: Create Free RAG and AI Agents with Qwen 3 and Ollama

In this comprehensive tutorial, I walk through building your own local AI system using Qwen 3 and Ollama. Learn how to create powerful RAG (Retrieval-Augmented Generation) systems and AI agents that…

1 min read

Python AI LLM RAG Ollama Machine Learning Qwen