About Us
Across the globe — and in Ukraine — both public and private sectors, as well as operators of critical infrastructure, are increasingly turning to Bug Bounty programs.
Bug Bounty and Bug Bash initiatives are modern, effective methods to strengthen the cybersecurity of digital systems, products, and networks. They engage independent security experts — bug hunters — who detect and help fix vulnerabilities before they can be exploited.
BugStream is Ukraine’s dedicated Bug Bounty platform, bringing together security researchers and organizations to uncover weaknesses, improve resilience, and protect strategic digital assets. The platform was created as a response to the unprecedented wave of cyberattacks against Ukraine.
Our mission is built on transparency, trust, and commitment to national interests, securing a safer digital future.
Leave your cybersecurity to the professionals!
Core Team
The people defining the trajectory of BugStream.
Anton Korzhynskyi
Head of Triage Team, Partner
A seasoned cybersecurity and AppSec professional with over a decade of experience. Anton has safeguarded critical infrastructure, led security audits, and helped organizations design resilient systems from the inside out. His approach blends deep technical expertise with strategic foresight — always emphasizing clarity, reliability, and transparency.
Bohdan Korzhynskyi
CTO, Partner
Cybersecurity researcher and bug hunter. Bohdan has reported vulnerabilities to some of the world’s leading companies and government institutions, including IBM, Sony, Toyota, Ford, Valve, U.S. Dept Of Defense, Yahoo, Shopify, OpenAI, Snapchat, Rockstar Games, Tumblr, Vimeo, Cloudflare, Starbucks, Xiaomi, General Motors, Malwarebytes, HackerOne, Samsung, Fortinet, Privatbank, Fuib, Palo Alto Software, and many more.
George Papariga
CEO, Partner
An expert in the legal dimensions of cybersecurity and an active contributor to national and international initiatives, including the National Defence Hackathon, Hackwave, Kyiv Cyber Resilience Forum, Cyber Unity Fridays, and CyberDefenders.Ukraine.
Yegor Aushev
Co-founder, Adviser
Managing Partner of CyberUnit.Tech and the Kyiv Cyber Resilience Forum.