Credentials

Rankings, recognition and certifications.

Verified standings on the platforms I'm active on, and certifications as they're earned. Bug bounty work follows coordinated disclosure, so specific reports stay private.

Platforms & rankings

TryHackMe

#1 Poland

Top 1% globally

Ranked #1 in Poland as of April 2026. Offensive and defensive rooms across SOC, DFIR, network, and web security. Completed SOC Level 1 learning path (THM-C8A7VLW0LF, 65h) and AI Security path (THM-5ASEL7JPGT, 20h).

TryHackMe Sapphire league leaderboard with Bartosz Reślinski ranked 1st place Sapphire league, 1st place profile shared on request

HackerOne

Active bug bounty researcher

Reporting valid security findings on in-scope programs under coordinated disclosure. Web application vulnerability research focused on IDOR, access control and business logic flaws.

profile shared on request

Intigriti

Active bug bounty researcher

Web application vulnerability research on the Intigriti platform. Focus on session handling, token oracles and ID predictability in production sandboxes.

profile shared on request

Certifications

TryHackMe SOC Level 1 certificate awarded to Bartosz Reślinski, certificate code THM-C8A7VLW0LF

SOC Level 1

TryHackMe · 65h learning path

Blue team fundamentals: SIEM, threat intel, DFIR, incident response.

THM-C8A7VLW0LF Verify ↗
TryHackMe AI Security certificate awarded to Bartosz Reślinski, certificate code THM-5ASEL7JPGT

AI Security

TryHackMe · 20h learning path

Attack surfaces, defenses and detection patterns for LLM-based systems and AI infrastructure.

THM-5ASEL7JPGT Verify ↗
Google IT Support Professional Certificate awarded to Bartosz Reślinski on Coursera

IT Support Professional

Google / Coursera

Foundations: networking, operating systems, system administration and IT security.

Coursera certificate Verify ↗

in progress · CompTIA Security+ (SY0-701) - target Q4 2026