akostak@sec-researcher:~# whoami

Ali Kostak

$ Vulnerability Researcher & Bug Bounty Hunter

Independent security researcher specializing in web application security, business logic flaws, authentication/authorization bypasses, and penetration testing. Actively hunting on Bug Bounty platforms and sharing research.

Technical Focus & Expertise

Web Application Security

OWASP Top 10, Business Logic Flaws, IDOR, Authentication & Authorization Bypass, CSRF, XSS.

Security Tooling

Burp Suite Professional, sqlmap, Nmap, Wireshark, Custom Python Scripting.

Labs & Environments

Active Directory Lab Environments, VirtualBox, Purple Team Network Breach Simulations.

Featured Security Reports & Research