Dr. Juraj Somorovsky finished his PhD in the area of XML Security in 2013. In his thesis „On the Insecurity of XML Security" he analyzes various cryptographic attacks on Web Services and presents practical countermeasures against these attacks, which were applied in XML Security specifications and in countless frameworks and applications. He presented his work at many scientific and industry conferences, including Usenix Security or OWASP Germany. Currently, he works as a Postdoc at the Ruhr University Bochum, and as a security specialist for his co-founded company 3curity GmbH. Dr. Tibor Jager is an academic cryptographer, doing research in applied and theoretical cryptography. His work focuses on practical cryptographic constructions, attacks and countermeasures, and the design and formal analysis of cryptographic protocols. He teaches computer networks and IT-security at Ruhr University Bochum. Together with Juraj Somorovsky, he found and reported flaws in cryptographic standards and libraries, including W3C's XML Encryption.