I am an Offensive Security Specialist and Red Teamer with a strong foundation in software engineering. My work focuses on Red Teaming, Penetration Testing, Reverse Engineering, and much more! I transitioned from building secured and complex systems to breaking them.
I actively look for and disclose vulnerabilities to help secure the ecosystem.
- CVE-2026-26281 & CVE-2026-26270
- CVE-2026-26273 & CVE-2025-28168
I hold the OSCE3 designation and a wide array of offensive certifications:
- Offensive Security: OSWE, OSED, OSEP, OSCP, OSWP
- Red Teaming: CRTO, CRTP, CARTP
- Incident Handling & Mobile: GCIH, eMAPT
- Specialized Training: Corelan Heap Masterclass, Maldev Academy
- Linkedin: https://www.linkedin.com/in/leandrosbatista21/
- Blog: https://iamleandrooooo.github.io/
- Hack The Box: https://app.hackthebox.com/profile/544655
- Medium: https://itsleandro.medium.com/