Open Source Security

In this episode Open Source Security chats with Sheogorath about HedgeDoc project's journey from HackMD to CodiMD and finally to HedgeDoc. We learn what forking a project looks like, including license changes (MIT to AGPL), security vulnerability management across different codebases, naming challenges, and infrastructure migrations. The conversation goes through to journey from HackMD to CodiMD and all the lessons learned along the way. And there are many lessons.

The blog post for this episode can be found at https://opensourcesecurity.io/2025/2025-02-fork_open_source_sheogorath/

In this episode, Open Source Security chats with Aaron Frost, CEO of Hero Devs about the world of maintaining end-of-life open source software. Aaron explains how EOL versions of open source work and how backporting security fixes can help maintaining compliance. In the discussion we cover the "just upgrade" mentality, how backporting works, why it's hard, and why it matters. We also cover some oddities the world of CVE brings to the discussion.

The blog post for this episode can be found at https://opensourcesecurity.io/2025/2025-02-patching_EOL_OSS_aaron_frost/

François Proulx, a supply chain security researcher at Boost Security, discusses how continuous integration (CI) and build pipeline security represents a critical and overlooked hole in our supply chain security. It seems like most supply chain compromises are actually from CI system breaches rather than direct code compromise, yet we seem to obsess over everything on either side of the CI system. François has a bunch of really good practical suggestions for how we can start to improve our CI security today.

The blog post for this episode can be found at https://opensourcesecurity.io/2025/2025-02-ignoring_ci_security_francois_proulx/

In this discussion with Tremolo Security CTO Marc Boorshtein, we explore what modern day Single Sign-On (SSO) looks like. Everyone likes to talk about zero trust, but how does that work? We talk about some of the history of authentication that got us here, and some technical details on how you should be implementing authentication into your application. We finish up with some passkey details and realize every authentication discussion really just turns into complaining how hard identity is.

The blog post for this episode can be found at

https://opensourcesecurity.io/2025/2025-02-modern_day_authentication_with_marc_boorshtein/

Dick Brooks from Business Cyber Guardian discusses the landscape of federal software security requirements, we discuss frameworks like CISA's Software Acquisition Guide, Secure Software Development Framework, and the EU's Cyber Resilience Act. These regulations impact open source projects differently from commercial vendors, Dick helps explain what that means for the vendors as well as open source developers.

The accompaning blog can be found at

https://opensourcesecurity.io/2025/01-government_security_requirements_with_dick_brooks

CISA Software Acquisition Guide CISA SAG Reader Project NASA SSDF collaboration

In this episode, Gary Kramlich, the lead developer of Pidgin discusses the challenges and strategies of maintaining a 26-year-old open source messaging client.Gary tell us all about how a small team manages technical debt, handles library dependencies, and makes decisions about rewrites versus incremental improvements while supporting a broader open source ecosystem.

The accompaning blog can be found at

https://opensourcesecurity.io/2025/01-open_source_maintenance_with_gary_kramlich/

In this episode of Open Source Security, Josh welcomes Thomas Depierre, a Site Reliability Engineer and open source maintainer, to discuss the intersection of safety and security. Thomas explains why safety is broader than security. While security often views people as the problem, Thomas explains that people are paradoxically the solution. Nothing should work, but it does, mostly due to people keeping things working.

The accompaning blog can be found at

https://opensourcesecurity.io/2025/01-safety_vs_security_with_thomas_depierre/

It's a new year and time for some changes to the opensourcesecurity.io website.

It's time to retire the podcast, but that's to make way for something new and hopefully better. You can read the details in the blog post (the audio version is basically the same thing)

https://opensourcesecurity.io/posts/2025-01-the_future_of_open_source_security/

Josh and Kurt talk about new NIST password guidance. There's some really good stuff in this new document. Ideas like usability and equity show up (which is amazing). There's more strict guidance against rotating passwords and complex passwords. This new guidance gives us a lot to look forward to.

• Usagi Electric
• NIST proposes barring some of the most nonsensical password rules
• NIST SP 800-63(B)
• STRIDE threat model
• PASTA threat model

Josh and Kurt talk about the supply chain of Santa. Does he purchase all those things? Are they counterfeit goods? Are they acquired some other way? And once he has all the stuff, the logistics of getting it to the sleigh is mind boggling. It's all very complex

• Project Gunman