Alexey Efremov is an Executive Director and seasoned application security leader with 14 years of experience, currently leading AppSecurity at Sberbank. He combines hands-on appsec engineering, code review expertise and developer-facing threat modeling to help product teams build secure web and mobile systems, with a particular focus on trading and global stock market applications. Known for translating complex vulnerabilities into clear guidance for engineering and business stakeholders, he also runs recruiting and team-building activities. Outside work he sharpens offensive skills on Hack The Box and PortSwigger and trains Brazilian jiu-jitsu, a mix that keeps his defensive and adversarial thinking sharp.
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