ghost_sec writes
Ridhwan Roshan · @ghost_sec

Breaking cyber assumptions for a living.

Organisations hire me to break into their systems before someone else does. These are the field notes: how the attacks actually work, what the defences missed, and why it matters, from AI systems to corporate networks and everything in between.

Featured

writing / 01
AI Red Team

When the copilot becomes the attack surface

A full methodology for red-teaming an enterprise AI deployment end to end: the attacker goals, the trust-boundary model, and every vector exercised across the identity plane, the LLM proxy, the cloud backend and the coding agent, with a one-line findings overview.

Read the methodology →
The platform inherited excessive trust at every layer, and exported almost no visibility.
13 findings · 2 critical · educational write-up

Writing

posts
AI Red Team Red-Teaming an Enterprise Claude Deployment Methodology and findings overview for an agentic AI stack: identity, proxy, cloud and the agent endpoint. Live AI Red Team Red-Teaming Internal AI Assistants & Workflow Apps A methodology: prompt injection, RAG authorisation bypass, tool misuse and workflow subversion in LLM-backed enterprise tooling. Live Red Team End-to-End Compromise of an Investment & Asset Management Firm From a phone call to Domain Admin: social engineering, a helpdesk failure and an AD CS misconfiguration across a 17-domain forest. Live Mobile App Sec Breaking a Crypto Vault A full kill chain against an Android and iOS digital-asset vault: a split encryption key, an MFA logic flaw, broken access control and unauthenticated exposure. Live Mobile App Sec One Phone Number to Account Takeover A Critical OTP authentication bypass in a fintech app: a passcode that was never one-time, and a verify step with no brakes. Live Red Team Bypassing EDR at Full Volume Building a custom Go implant to evade CrowdStrike and Trellix at maximum sensitivity: static analysis, runtime shellcode detection, behavioural heuristics and userland hooks. Live Engineering Offensive Security Harness Engineering Architecture for the orchestration layer between AI models and offensive tooling: scope policy, execution safety, persistent memory, evidence validation and multi-agent coordination. Live Red Team Bypassing Enterprise Firewalls with Trusted Infrastructure Living off trusted sites, cloud tunnels as reverse proxies, and an nginx redirector that makes attacker traffic indistinguishable from legitimate cloud usage. Live Cloud Lateral Movement in the Cloud Security research on moving between identities and resources across a cloud tenant. In progress

Talks & research

stage
BSides Dublin · 2025 Breaching a Bank: Mission Impossible Style A full-scope red team walkthrough of compromising a financial institution. Speaker OWASP Chennai · 2022 Pwning a Billion-Dollar Transportation Firm with $123 How cheap OSINT and a small budget became an end-to-end compromise. Keynote BSides Delhi · 2022 Deep Dive into Unnoticed Active Directory Misconfigurations The quiet AD misconfigurations that keep turning into domain compromise. Workshop

Topics

focus areas
01

AI red teaming

LLM and agent security: prompt injection, RAG and memory poisoning, tool and MCP abuse, and permission-boundary bypass.

02

Red team operations

Adversary simulation and purple teaming: initial access, C2, evasive payloads, post-exploitation and debrief.

03

Web & API security

OWASP Top 10, broken access control, authentication failures and business-logic flaws across web, API and thick clients.

04

Active Directory

Misconfigurations, trust abuse and lateral movement that turn a single foothold into domain compromise.

05

EDR & control bypass

Evading endpoint protection, web filters, proxies and firewalls, and building tooling that blends into normal activity.

06

Cloud & identity

RBAC abuse, credential sprawl and lateral movement across cloud tenants and the identity planes that gate them.

About

who

I'm Ridhwan Roshan. I grew up watching Sneakers and The Matrix on repeat, convinced that breaking into things for a living was the coolest job that would never actually exist. Turns out it does, and I've been doing it for years: leading red team engagements end to end, from social engineering the front desk to pulling Domain Admin out of a misconfigured certificate authority.

Now AI is rewriting the field in real time, and honestly, it feels like the Matrix is happening as we speak. I spend most of my time red-teaming AI-backed enterprise applications, internal assistants and agentic workflows, finding the ways that untrusted content, over-trusted tools and weak identity turn a helpful copilot into an attack surface.

I never had much fascination for writing blog posts. It always felt like the part of the job that took longer than the actual hacking. Then AI changed that too. Most of the heavy-lift writing on this site was done with the help of Claude, and I'm genuinely grateful for it. So: thank you to Claude for making a terrible blogger into a slightly less terrible one, and thank you to every organisation I've worked with for giving me the stories worth writing about.

Ghost Sec Writes is where those stories land, written for educational purposes, from the assessments I've delivered across data centres, automotive, financial services and other sectors.

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Certs
OSEPOSCPCRTOCREST CRT
Education
MSc Cyber Security Engineering, Warwick
Languages
PythonGoC#C/C++
Tooling
Cobalt StrikeHavocSliver
Frameworks
MITRE ATT&CKPTESOWASP