Community Spotlights
January 2026: Peter Hunt of Red Hat
September 2025: David Korczynski and Adam Korczynski of ADA Logics
Upcoming Meetups
See our lu.ma page for an up to date list of events!
Previous Meetups
Meetup 008: Security Source Code Audit of OpenEXR
Pietro Tirenna and Davide of Shielder take us through their security audit of Academy Software Foundation’s OpenEXR.
Meetup 007: Threat Modeling by Adam Shostack
Adam Shostack, President of Shostack and Associates and author of “Threat Modeling: Designing for Security” and “Threats: What Every Engineer Should Learn from Star Wars” presents how open source can lead the movement on publishing threat models.
Meetup 006: Reflections on 10 Years by Derek Zimmer and Amir Montazery
Derek Zimmer and Amir Montazery of OSTIF present on the Open Source Technology Improvement Fund’s past, present, and future. The two will be joined by special guests to celebrate the organization’s 10 year anniversary, and attendees will learn about the hard lessons of growing a security auditing firm from small beginnings.
Meetup 005: Guarding the Gates: Lessons from the Coinbase CB-MPC Cryptographic Library Audit by Nadim Kobeissi
Nadim Kobeissi, Senior Applied Cryptography Auditor from Cure53, presents on their audit of Coinbase’s CB-MPC cryptography library.Through this deep dive, attendees will gain valuable lessons on ensuring protocol correctness, preventing subtle cryptographic pitfalls, and maintaining security rigor in open-source cryptographic libraries.
Meetup 004: Security Source Code Audit of Mullvad VPN by Markus Vervier and Eric Sesterhenn
Markus Vervier, Head of Research and Managing Director of X41 D-Sec Gmbh and Eric Sesterhenn, Principal Security Consultant of X41 D-Sec Gmbh present on their audit of Mullvad VPN.
Meetup 003: Enhancing Zcash Security: A long-term engagement with Least Authority, the Zcash Ecosystem Security Lead
Liz Steininger, CEO and Managing Director of Least Authority, and Pacu, Developer Relations Engineer at Zcash Community Grants, present on enhancing Zcash security.
Meetup 002: Unmasking Cryptographic Risks: A Deep Dive into the Nym Security Audit by Nadim Kobeissi
Hear from Cure53 Cryptography Auditor Nadim Kobeissi as he discusses the security audit of Nym. Nadim dives into the audit findings, impact of auditing on project security, and importance of cryptographic work in cutting-edge technology.
Meetup 001: Leave Home Safe: The Good, The Bad, and The Ugly by Abraham Aranguren
Hear from 7ASecurity CEO Abraham Aranguren as he breaks down the process and results of pentesting the COVID-19 tracing app LeaveHomeSafe, used by millions in Hong Kong during the pandemic. In this talk Abraham discusses the solicitation of the work, the procedure of the pentest, and presents results that will leave you thinking about what medical data you’ve willingly saved in phone apps.
OSTIF is growing our community outreach through meetups, events, and conferences!
Join us virtually via an online meetup- participate as an audience member or present something! Submit a talk about open source, security, a vulnerability, or security research on our Google Calendar.
Follow us on this page, LinkedIn or X to stay up to date about next meetups. Or, follow our Lu.ma Calendar page at OSTIF Meetups.
Hear directly from our partners via our Meet the Community segment, available on Youtube.
