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Ivan Ristić is the Chief Scientist at Red Sift and the Publisher at Feisty Duck. Ivan also served as a Technical Advisory Board Member at Let's Encrypt and Founder at Hardenize, which was later acquired by Red Sift. Furthermore, Ivan was the European Review Board Member at Black Hat, Director of Engineering at Qualys, and Founder at SSL Labs (acquired by Qualys). Additionally, Ivan has experience as the VP Security Research at Breach Security, Chapter Leader - London at OWASP, and Founder at ModSecurity (acquired by Breach Security). Ivan holds a B.Sc. (Hons) in Information Technology and Computing from The Open University.