Manuel Fernandez has been working in all areas of security. He is a security pentester and has been developing projects like FOCA and has done very good security research in areas such as Connection String Parameter Pollution Attacks (that was presented at Blackhat DC 2010) and malware. He was a speaker at both Defcon 20 in 'Owning Bad Guys {And Mafia} With Javascript Botnets' and 'The power of FOCA 3: Why you will love the seals' in HITB 2012 along with other national conventions.
