I recently chatted with Andrew Nesbitt about his project, Ecosyste.ms. Ecosyste.ms catalogs open source projects by tracking packages, dependencies, repositories, and more. With this dataset Andrew is able to incredible insights into the world of open source. We chat all about how Ecosyste.ms works and how he manages to wrangle all this data.

The show notes and blog post for this episode can be found at https://opensourcesecurity.io/2025/2025-06-ecosystems_andrew_nesbitt/

Daniel Stenberg, the maintainer of Curl, discusses the increase in AI security reports that are wasting the time of maintainers. We discuss Curl's new policy of banning the bad actors while establishing some pretty sane AI usage guidelines. We chat about how this low-effort, high-impact abuse pattern is a denial-of-service attack on the curl project (and other open source projects too).

The show notes and blog post for this episode can be found at https://opensourcesecurity.io/2025/2025-05-curl_vs_ai_with_daniel_stenberg/

I recently had a chat with Kairo about a project he maintains called Repository Service for TUF (RSTUF). We explain why TUF is tough (har har har), what RSTUF can do, and some of the challenges around securing repositories.

The show notes and blog post for this episode can be found at https://opensourcesecurity.io/2025/2025-05-rstuf-with-kairo-de-araujo/

William Woodruff discussed his project, Zizmor, a security linter designed to help developers identify and fix vulnerabilities within their GitHub Actions workflows. This tool addresses inherent security risks in GitHub Actions, such as injection vulnerabilities, permission issues, and mutable tags, by providing static analysis and remediation guidance. Fresh off the heels of the tj-actions/changed-files backdoor, this is a great topic with some things everyone can do right away.

The show notes and blog post for this episode can be found at https://opensourcesecurity.io/2025/2025-05-securing-github-actions-william-woodruff/

Recently, I had the pleasure of chatting with Paul Asadoorian, Principal Security Researcher at Eclypsium and the host of the legendary Paul's Security Weekly podcast. Our conversation dove into the often-murky waters of embedded systems and the Internet of Things (IoT), sparked by a specific vulnerability discussion on Paul's show concerning reference code for the popular ESP32 microcontroller.

The show notes and blog post for this episode can be found at https://opensourcesecurity.io/2025/2025-05-embedded-security-with-paul-asadoorian/

Dimitri Stiliadis, CTO from Endor Labs, discusses the recent tj-actions/changed-files supply chain attack, where a compromised GitHub Action exposed CI/CD secrets. We explore the impressive multi-stage attack vector and the broader often-overlooked vulnerabilities in our CI/CD pipelines, emphasizing the need to treat these build systems with production-level security rigor instead of ignoring them.

The show notes and blog post for this episode can be found at https://opensourcesecurity.io/2025/2025-04-tjactions_with_dimitri_stiliadis/

I chat with Alan Pope about the open source security tools Syft, Grype, and Grant. These tools help create Software Bills of Materials (SBOMs) and scan for vulnerabilities. Learn why generating and storing SBOMs is crucial for understanding your software supply chain and quickly responding to new threats like Log4Shell.

The show notes and blog post for this episode can be found at https://opensourcesecurity.io/2025/2025-04-syft-grype-grant-alan-pope/

Aaron Frost explores the overly complex world of vulnerability identifiers for end of life software. We discuss how incomplete CVE reporting creates blind spots for users while arming attackers with knowledge. The conversation uncovers the ethical tensions between resource constraints and security transparency, highlighting why the "vulnerable until proven otherwise" approach is the best path forward for end of life software.

The show notes and blog post for this episode can be found at https://opensourcesecurity.io/2025/2025-04-cve_eol_aaron_frost/

Cargo Semver Checks is a Rust tool by Predrag Gruevski that is tackling the problem of broken dependencies that cost developers time when trying to upgrade dependencies. Predrag's work shows how automated checks can catch breaking changes before they're released, potentially saving projects from unexpected failures and making dependency updates less painful across the entire Rust ecosystem.

The show notes and blog post for this episode can be found at https://opensourcesecurity.io/2025/2025-04-cargo-semver-checks-predrag-gruevski/

Lars Wirzenius discusses his innovative CI/CD system Ambient, which uses isolated virtual machines without network access to enhance security, and his work on Radicle, a peer-to-peer Git collaboration platform. Together, these projects offer a glimpse into a more distributed future for software development, addressing key challenges in current CI/CD systems like long wait times, security vulnerabilities, and centralized infrastructure limitations.

The blog post for this episode can be found at https://opensourcesecurity.io/2025/2025-03-ambient-radicle-lars-wirzenius/