Raul regularly teaches penetration testing courses for SANS and is an active speaker at international security conferences and events, such as RootedCON, Black Hat, OWASP, BruCON, etc. Mr. Siles is author of security training courses, blogs, books, articles, and tools, and actively contributes to community and open-source projects. He loves security challenges, and has been a member of international organisations, such as the Honeynet Project or the SANS Internet Storm Center. Raul is one of the few individuals worldwide who have earned the GIAC Security Expert (GSE) designation, as well as many other certifications. Raul holds a master's degree in computer science from UPM (Spain) and a postgraduate in security and e-commerce.