Our story began in 2014 when three prominent Ukrainian cybersecurity professionals have founded Berezha Security. Since then, our company has delivered over 200 projects to more than 100 clients worldwide. We have customers in all major business sectors, including IT services, software products, banking, fintech, retail, healthcare, media, gaming, consulting services, legal and advisory, and many more. Review our public references on Clutch to get a better view of our clients.
Using our offensive mindset and experience, we help our customers develop a mindful approach to cybersecurity and integrate security principles into all aspects of their business.
We empower our clients to defeat tomorrow’s cybersecurity threats – today.
All of BSG's mid to senior-level professionals possess esteemed cybersecurity certifications, with a majority being OSCP-certified. These independent certifications validate our team's expertise in application security, penetration testing, and top-tier security consulting services.
Offensive Security Certified Professional, OSCP
(ISC)2 Certified Information Systems Security Professional, CISSP
ISACA Certified Information Systems Auditor, CISA
eLearnSecurity Web Application Penetration Tester, eWPTX
eLearnSecurity Mobile Application Penetration Tester, eMAPT
eLearnSecurity Certified Professional Penetration Tester, eCPPT
eLearnSecurity Junior Penetration Tester, eJPT
EC-Council Certified Ethical Hacker, CEH
Co-founder & COO CISSP
BSG services, operations, and quality leader.
IT auditor and cybersecurity consultant.
Andriy is an accomplished manager with 10+ years of experience in various industry verticals. He has started his IT audit and consulting career and continued in enterprise IT and custom software development services.
Andriy has experience in leading customer relationships within the US, UK, and Western Europe geographies, responsible for distributed teams and permanent engagements of different scales.
Andriy has stood at the root of the Ukrainian cybersecurity professional community and has joined BSG to advance his contribution to the cybersecurity industry's development.
At BSG, Andriy acts the Chief Services Officer and a security consulting practice lead.
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.
