Rahul Dhawan

@dhawan291

Senior Security Engineer

Joined May 2021

About

Rahul Dhawan is a senior security engineer with 6 years of experience securing distributed systems, building internal security platforms, and leading initiatives across WAF, data security, logging, and detection. He writes technical breakdowns grounded in real-world deployments, with an eye for architecture, automation, and reliability under pressure.

Available for

I am open to offering my services for mentoring, freelancing, and consultancy, among other possibilities.

Rahul Dhawan's blogs

Security Mattersrahuldhawan.me4 posts

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Recently published

RDRahul Dhawanrahuldhawan.meJul 12, 2025 · 9 min read

Breaking SSRF Defenses: Real-World Bypass Techniques

🔚 TL;DR: Every SSRF defense you think is bulletproof has been bypassed in production. This guide shows you how attackers think, what defenses actually work, and gives you a hands-on lab to test everything yourself. Why SSRF Still Matters in 2025 S...

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RDRahul Dhawanrahuldhawan.meJun 8, 2025 · 15 min read

Cloudflare WAF in the Wild: Navigating Partial DNS Challenges

When integrating Cloudflare’s Web Application Firewall (WAF) into mature, production-grade infrastructure—not a simple hello-world setup—the internet offers little guidance. This post is for architects and engineers deploying Cloudflare at scale, ens...

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RDRahul Dhawanrahuldhawan.meMay 30, 2021 · 12 min read

Reverse Engineering using GDB

Overview In this post, I'm going to explain the working of the GNU debugger tool. By the end of this post, you will be able to do the following operation using GDB: See how the processor executes the programs. Step through the instruction line by l...

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RDRahul Dhawanrahuldhawan.meMay 23, 2021 · 13 min read

HackTheBox Walkthrough: Valentine

Overview Valentine is an easy machine on HackTheBox. Being a retired machine, it can only be accessed by subscribing to HTB. This autopsy will include the exploitation of Heartbleed Vulnerability and Privilege escalation using the TMUX terminal sessi...

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Rahul Dhawan

About

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Rahul Dhawan's blogs

Recently published

Breaking SSRF Defenses: Real-World Bypass Techniques

Cloudflare WAF in the Wild: Navigating Partial DNS Challenges

Reverse Engineering using GDB

HackTheBox Walkthrough: Valentine

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Rahul Dhawan

About

Available for

Rahul Dhawan's blogs

Recently published

Breaking SSRF Defenses: Real-World Bypass Techniques

Cloudflare WAF in the Wild: Navigating Partial DNS Challenges

Reverse Engineering using GDB

HackTheBox Walkthrough: Valentine