Rick Ellis is a rockstar turned programmer who is the founder of EllisLab - a software development company based in Bend, Oregon, which develops applications written in PHP.
Fred de Vries is based from Netherlands and is best known as the Chief Software Architect (CSA) of RaProducts (which developed the famous JavaRa) and SingularLabs (which acquired JavaRa in 2011). Other innovative programs that Fred de Vries helped create were RogueRemover (the predecessor of Malwarebytes Antimalware) and YourWalletProtector, a program designed to help gamblers beat their addiction.
NJ Ouchn is the organizer of the major event Blackhat Arsenal Tools (US and Europe) since 2011 and the founder and main maintainer of www.toolswatch.org. As of May 2016 he goes by the handle of @toolswatch on Twitter.
Ariel Waissbein joined Corelabs at Core Security Technologies in 1999. During 1999-2002 he worked on a new public-key cryptographic scheme, he discovered cryptographic attacks to popular software products such as SSH and MySQL and designed a cryptographic attack method against polynomial-based public-key schemes.
Michael Thumann has published security advisories regarding topics like ‘Cracking IKE Preshared Keys’ and Buffer Overflows in Web Servers/VPN Software/VoIP Software. Michael enjoys sharing his self-written security tools (e.g. ‘tomas—a Cisco Password Cracker’, ikeprobe—IKE PSK Vulnerability Scanner’ or ‘dnsdigger—a dns information gathering tool’) and his experience with the community.
Daniel Mende is a a German security researcher specialized in network protocols and technologies. He’s well known for his Layer2 extensions of the SPIKE and Sulley fuzzing frameworks and has presented on protocol security at many occasions including CCC Easterhegg, IT Underground/Prague and ShmooCon.
Bryan Fite (aka Angus Blitter) is the founder of HackSecKlahn (www.hacksec.org) a group of like-minded technologists who believe diversity is good for the species and hackers are a national resource.
Jon Callas is an American computer security expert who is the former Chief Technical Officer of Entrust, co-founder of Silent Circle and PGP Corporation. He is an author of cryptographic standards including OpenPGP and DKIM, and a frequent author and commentator. He has also worked for a number of companies including Counterpane Internet Security, Apple, DEC, and others.
Rodrigo Branco is the founder and responsible for the Dissect || PE Malware Analysis Project. He used to work as the Director of Vulnerability & Malware Research at Qualys. Previously, as the Chief Security Research at Check Point he founded the Vulnerability Discovery Team (VDT) and released dozens of vulnerabilities in many important software. In 2011 he was honored as one of the top contributors to Adobe Vulnerabilities in the past 12 months. He is the maintainer of the StMichael/StJude projects (www.sf.net/projects/stjude), the developer of the CMorphism (www.kernelhacking.com/rodrigo) and has talks at the most important security-related events in Brazil (H2HC, SSI, CNASI).
Francisco Amato is a security researcher and computer security consultant who works in the area of vulnerability development, blackbox testing, reverse engineering. He is also the founder of ekoparty security conference and the CEO of Infobyte Security Research where he published his developments in audit tools and vulnerabilities in products from companies like Novell, IBM, Sun Microsystems, Apple, Microsoft.