OWASP Appsec Tel Aviv 2019, Guy Barnhart-Magen's 'Crypto Failures, And Not Just In Bitcoin' → August 07, 2019 by Marc Handelman in Application Security, Conferences, Education, Information Security, OWASP Appsec Tel Aviv, OWASP Guy Barnhart-Magen is the Chairman of BSides Tel Aviv & Founder of Melior Security