- We foster the cybersecurity development by supporting professional events.
- We are at the core of OWASP Kyiv, OWASP Ukraine, and NoNameCon.
- We speak at IT events and promote cybersecurity across the industries.
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.
Our team holds the industry's most demanding security certifications, independently validating expertise in penetration testing, application security, cybersecurity consulting, and red team operations.
OSEP
Offensive Security Experienced Penetration Tester
CISSP
(ISC)2 Certified Information Systems Security Professional
OSCP
Offensive Security Certified Professional
CISA
ISACA Certified Information Systems Auditor
CRTP
Certified Red Team Professional
CRTE
Certified Red Team Expert
Burp
Burp Suite Certified Practitioner
eWPTX
INE Security Web Application Penetration Tester eXtreme
eMAPT
INE Security Mobile Application Penetration Tester
eCPPT
INE Security Certified Professional Penetration Tester
CEH
EC-Council Certified Ethical Hacker
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 CISSP, OSCP, 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 holds CISSP, OSCP, and CISA certifications, demonstrating expertise across security management, technical penetration testing, and audit disciplines.
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.