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All BSG crew members are highly-dedicated cybersecurity enthusiasts and recognized security experts – in Ukraine and abroad. All our mid- and senior-level consultants hold top cybersecurity certifications, OSCP, CISSP, CISA, among others. Our expertise in Application Security, Penetration Testing, and Information Security Consulting is proven by tens of completed projects with highly positive customer feedback.
Co-founder & CEO OSCP, CISSP, CISA
BSG strategist.
Information security expert and community leader.
Vlad Styran is an internationally known infosec expert with 15+ years of experience in penetration testing, information security management, consulting, and audit. He maintains OSCP, CISSP, and CISA certifications and was certified as CEH, ISO 27001 Lead Auditor, and many more throughout his career.
Vlad is a co-founder of the OWASP Kyiv chapter and the NoNameCon information security conference. He is a notable blogger, podcaster, and conference speaker.
At BSG, Vlad is responsible for our growth and customer experience. His involvement helps us to deliver first-rate consulting services in application security, security awareness, and information security strategy.
Security Consultant,
Application Security Lead
Top 20 bug-hunter on BugCrowd.
Co-founder of OWASP Kyiv & NoNameCon.
Ihor Bliumental is a world-class application security expert and one of the most successful bug-hunters globally. He was named the BugCrowd MVP multiple times and submitted around 150 vulnerabilities within bug bounty programs of global brands such as MasterCard, Netflix, Upwork, Tesla, and others.
At BSG, Ihor leads, plans, and coordinates all our security assessment projects and coaches the teammates on various cybersecurity aspects.
He is a compulsive book reader and a professional intellectual games team captain.
Security Consultant, Training Lead
OSCP, eWPTX, eMAPTPenetration tester. CTF game master. OWASP Kyiv chapter leader.
Serhii is an information security professional with vast experience in Application Security and Penetration Testing. He manages the full spectrum of appsec and pentesting engagements in the BSG portfolio.
As the BSG Training Lead, he is always up to date on the latest security trends and is passionate about organizing conferences and speaking publicly. He presented and volunteered at BruCON, OWASP Ukraine, NoNameCon, and TestingStage, among many others.
Serhii is fond of sports videogames and loves riding the drone and taking footage of his picturesque travels.
Security Consultant OSCP, eWPTX
Penetration tester.
Security trainer.
OWASP Kyiv chapter leader.
Kyrylo is a cybersecurity consultant specializing in web and mobile Application Security analysis, wired and wireless network Penetration Testing, and Social Engineering security assessments.
His passion for cybersecurity developed from his dedication to technical disciplines and a superpower of accumulating practical knowledge in astronomical amounts. Kyrylo is a talented trainer, and he contributes to the cybersecurity community by volunteering at OWASP Kyiv, OWASP Ukraine, NoNameCon, and other professional movements.
Security Analyst ejPT, CEH, Burp Suite Certified Practitioner
Penetration Tester
Having a strong Quality Assurance background Oksana is focused on Web Applications Security. Oksana is holding Burp Suite Certified Practitioner certificate and is being Microsoft Certified: Azure Security Engineer Associate.
She is continuously learning and improving her penetration testing skills by taking part in Bug Bounty and CTF program.
Oksana likes running and actively spending time with her family.
Security Analyst
Penetration Tester.
Professional community volunteer.
Roman is a cybersecurity engineer focused on the technical aspects of Penetration Testing, Application Security, and Social Engineering assessments.
Roman is working hard to develop his network pentesting skills and trains for the OSCP course and exam in the Hack The Box playground. Meanwhile, he has started sharing his knowledge with the community as the best way to learn something by trying to teach it.
Roman is a dedicated professional events volunteer and a hobbyist basketball player.
Software Engineer
Application Security enthusiast.
Professional community volunteer.
Roman is a full-stack software developer with more than ten years of programming experience who focuses on Web Application Development and Software Security.
At BSG, Roman develops our own software product, the D.A.R.T.S. pentest automation platform, which allows us and our clients to collaborate securely on sensitive pentest-related data. With Roman's help, we streamline our project activities, automate reporting, and integrate external data sources into our workflow.
Roman contributes to the cybersecurity community development by volunteering at NoNameCon and OWASP Ukraine professional events.