Our Team
Layer8Masters LLC was founded by four members of the Cybersecurity community with many years of experience putting on CyberSecurity conferences – Richard Greenberg, Haral Tsitsivas, Alexander Braehler, and David Wettenstein.
Richard and David currently serve on the Board of the Los Angeles Chapter of the international Information Systems Security Association (ISSA).
All have demonstrated over a decade of volunteer work for not-for-profits, and have worked thousands of hours to help ensure ongoing education experiences for their members and others.
Layer8Masters LLC combines the experience of these four individuals for the benefit of the community, as CyberSecurity and Privacy are some of the most challenging issues of the 21st century.
Richard Greenberg, CEO of Security Advisors LLC, is a former CISO for 15 years. He was recognized as a Distinguished Fellow by the Information Systems Security Association (ISSA) International, and was also awarded their Honor Roll designation.
Richard has been Chair of the ISSA-LA Security Summit and AppSec California, was a planner for AppSec USA, and also formed the Women in Security Forum and the Healthcare Security and Privacy Forum. Richard has served as an elected member of the OWASP Global Board of Directors and was leader of the OWASP Los Angeles Chapter.
You may have heard Richard’s interview as a Cyber Security expert on Will Ferrell’s Ron Burgundy podcast: https://www.iheart.com/podcast/the-ron-burgundy-podcast-30270227/episode/cyber-security-47951911/.
Haral Tsitsivas is a cybersecurity leader and software developer with 40+ years of IT and software development and 20+ years of systems and software security experience, specializing in threat modeling, product security reviews and assessments.
Haral is an Orange County OWASP chapter leader, serves on the board of the OWASP Outreach Committee and is the Vice-Chair of the OWASP Chapter Committee.
David Wettenstein is active member of the information security community in Southern California for over a decade, and board member for several Not-for-Profit (NFP) organizations such as Information System Security Association (ISSA) and Open Web Application Security Project (OWASP) Los Angeles Chapter. He was the treasurer for High Tech Crimes Investigation Association (HTCIA SoCal) and helped other NFPs, BSides Los Angeles, AppSec California and ISSA.LA Summits organize their conferences.
David has over three decades of IT/IS experience helping for SMB and large enterprises build and architect their digital footprints. He has earned an MBA and continued his education with various technical certifications including computer forensics.
Alexander Braehler is the Co-Founder and COO of Layer 8 Masters LLC, with nearly 40 years of experience in IT and cybersecurity. He is a Certified Cyber Security Architect and has been a trusted technology advisor to businesses of all sizes across the U.S. since 1996.
Originally from Germany, Alexander began his career in 1986 at one of the country’s first Apple dealerships. He later completed multi-year state-certified studies, earning national credentials as an Electronic Data and Control Engineer and a Meister degree in Communication Technology.
After moving to the U.S., he founded Tekkno Inc. and became a citizen in 2004. He was a longtime member of the Apple Consultants Network and has served clients across industries with a focus on secure, reliable IT environments.
Alexander has been active in the cybersecurity community since 2011, including serving as Vice President and later President of HTCIA’s Southern California chapter. He also contributed to regional cybersecurity events through OWASP L.A. and ISSA L.A.
At Layer 8 Masters, Alexander leads technical strategy and plays a key role in the planning and execution of cybersecurity conferences. His experience ensures each event delivers practical value and a strong community impact.