Bug Bounty & Security Research

Software Engineering @ McMaster · Bug Bounty Hunter since 2021 · Web & Mobile Security Researcher

Writeups on XSS, IDOR, auth bypasses, privilege escalation, and more.

Forcefully Joining Private Servers via Shared Invite ID Namespace

How I discovered that a staging environment shared its invite ID namespace with production, allowing an attacker to generate invite codes on staging and use them to forcefully join random private servers on production — including invite-only ones.

April 17, 2026 · 5 min · Youssef Elsayyad

Hello World — Why I Started This Blog

Introducing my security research blog — what to expect and why I’m writing.

April 17, 2026 · 1 min · Youssef Elsayyad