Curl and libcurl are everywhere. Not only has the project maintained success for almost three decades now, but it's done that while being written in C. Daniel Stenberg talks about the challenges in dealing with appsec, the design philosophies that keep it secure, and fostering a community to create one of the most recognizable open source projects in the world.

Segment Resources:

• https://daniel.haxx.se/blog/2025/01/23/cvss-is-dead-to-us/
• https://daniel.haxx.se/blog/2024/01/02/the-i-in-llm-stands-for-intelligence/
• https://thenewstack.io/curls-daniel-stenberg-on-securing-180000-lines-of-c-code/

Google replacing SMS with QR codes for authentication, MS pulls a VSCode extension due to red flags, threat modeling with TRAIL, threat modeling the Bybit hack, malicious models and malicious AMIs, and more!

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Show Notes: https://securityweekly.com/asw-320

Minimizing latency, increasing performance, and reducing compile times are just a part of what makes a development environment better. Throw in useful tests and some useful security tools and you have an even better environment. Dan Moore talks about what motivates some developers to prefer a "local first" approach as we walk through what all of this means for security.

Applying forgivable vs. unforgivable criteria to reDoS vulns, what backdoors in LLMs mean for trust in building software, considering some secure AI architectures to minimize prompt injection impact, developer reactions to Rust, and more!

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Show Notes: https://securityweekly.com/asw-319

We're getting close to two full decades of celebrating web hacking techniques. James Kettle shares which was his favorite, why the list is important to the web hacking community, and what inspires the kind of research that makes it onto the list. We discuss why we keep seeing eternal flaws like XSS and SQL injection making these lists year after year and how clever research is still finding new attack surfaces in old technologies. But there's a lot of new web technology still to be examined, from HTTP/2 and HTTP/3 to WebAssembly.

Segment Resources:

• Top 10, 2024: https://portswigger.net/research/top-10-web-hacking-techniques-of-2024
• Full nomination list: https://portswigger.net/research/top-10-web-hacking-techniques-of-2024-nominations-open
• Project overview: https://portswigger.net/research/top-10-web-hacking-techniques

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Show Notes: https://securityweekly.com/asw-318

Code scanning is one of the oldest appsec practices. In many cases, simple grep patterns and some fancy regular expressions are enough to find many of the obvious software mistakes. Scott Norberg shares his experience with encountering code scanners that didn't find the .NET vuln classes he needed to find and why that led him to creating a scanner from scratch. We talk about some challenges in testing tools, making smart investments in engineering time, and why working with .NET's compiler made his decisions easier.

Segment Resources:

-https://github.com/ScottNorberg-NCG/CodeSheriff.NET

Identifying and eradicating unforgivable vulns, an unforgivable flaw (and a few others) in DeepSeek's iOS app, academics and industry looking to standardize principles and practices for memory safety, and more!

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Show Notes: https://securityweekly.com/asw-317

Threat modeling has been in the appsec toolbox for decades. But it hasn't always been used and it hasn't always been useful. Sandy Carielli shares what she's learned from talking to orgs about what's been successful, and what's failed, when they've approached this practice. Akira Brand joins to talk about her direct experience with building threat models with developers.

Speculative data flow attacks demonstrated against Apple chips with SLAP and FLOP, the design and implementation choices that led to OCSP's demise, an appsec angle on AI, updating the threat model and recommendations for implementing OAuth 2.0, and more!

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Show Notes: https://securityweekly.com/asw-316

A lot of AI security boils down to the boring, but important, software security topics that appsec teams have been dealing with for decades. Niv Braun explains the distinctions between AI-related and AI-specific security as we avoid the FUD and hype of genAI to figure out where appsec teams can invest their time. He notes that data scientists have been working with ML and sensitive data sets for a long time, and it's good to have more scrutiny on what controls should be present to protect that data.

This segment is sponsored by Noma Security. Visit https://securityweekly.com/noma to learn more about them!

An open source security project forks in response to license changes (and an echo of how we've been here before), car hacking via spectacularly insecure web apps, hacking a synth via spectacularly cool MIDI messages, cookie parsing problems, the RANsacked paper of 100+ LTE/5G vulns found from fuzzing, and more!

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Show Notes: https://securityweekly.com/asw-315

What’s in store for appsec in 2025? Sure, there'll be some XSS and SQL injection, but what about trends that might influence how appsec teams plan? Cody Scott shares five cybersecurity and privacy predictions and we take a deep dive into three of them. We talk about finding value to appsec from AI, why IoT and OT need both programmatic and technical changes, and what the implications of the next XZ Utils attack might be.

Segment resources:

• https://www.forrester.com/blogs/predictions-2025-cybersecurity-risk-privacy/

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Show Notes: https://securityweekly.com/asw-314

There's a pernicious myth that developers don't care about security. In practice, they care about code quality. What developers don't care for is ambiguous requirements. Ixchel Ruiz shares her experience is discussing software designs, the challenges in prioritizing dev efforts, and how to help open source project maintainers with their issue backlog.

Segment resources:

• https://github.com/ossf/scorecard
• https://www.commonhaus.org/
• https://www.hackergarten.net/

Design lessons from PyPI's Quarantine capability, effective ways for appsec to approach phishing, why fishshell is moving to Rust component by component (and why that's a good thing!), what behaviors the Cyber Trust Mark might influence, and more!

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Show Notes: https://securityweekly.com/asw-313

All appsec teams need quality tools and all developers benefit from appsec guidance that's focused on meaningful results. Greg Anderson shares his experience in bringing the OWASP DefectDojo project to life and maintaining its value for over a decade. He reminds us that there are tons of appsec teams with low budgets and few members that need tools to help them bring useful insights to developers.

Segment Resources:

• https://owasp.org/www-project-defectdojo/
• Three-quarters of CISOs surveyed reported being "overwhelmed" by the growing number of tools and their alerts: https://www.darkreading.com/cloud-security/cisos-throwing-cash-tools-detect-breaches
• As many as one-fifth of all cybersecurity alerts turn out to be false positives. Among 800 IT professionals surveyed, just under half of them stated that approximately 40% of the alerts they receive are false positives: https://www.securitymagazine.com/articles/97260-one-fifth-of-cybersecurity-alerts-are-false-positives
• 91% of organizations knowingly released vulnerable applications, 57% of vulnerabilities are left unresolved by developers, 32% of CISOs deploy vulnerable code in the hopes it won’t be discovered, 56% of developers struggle to prioritize vulnerability fixes: https://info.checkmarx.com/future-of-application-security-2024

Curl removes a Rust backend, double clickjacking revives an old vuln, a new tool for working with HTTP/3, a brief reminder to verify JWT signatures, design lessons from recursion, and more!

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Show Notes: https://securityweekly.com/asw-312

Practices around identity and managing credentials have improved greatly since the days of infosec mandating 90-day password rotations. But those improvements didn't arise from a narrow security view. Hannah Sutor talks about the importance of balancing security with usability, the importance of engaging with users when determining defaults, and setting an example for transparency in security disclosures.

Segment resources

• https://youtu.be/ydg95R2QKwM

Curl's oldest bug yet, RCPs (and more!) from AWS re:Invent, possible controls for NPM's malware proliferation, insights and next steps on protecting top 500 packages from the Census III report, the flawed design choice that made Microsoft's OTP (successfully) brute-forceable, and more!

Visit https://www.securityweekly.com/asw for all the latest episodes!

00:00 Welcome to Application Security Weekly! 01:49 Meet the Experts 03:28 What Are Non-Human Identities? 06:17 Balancing Security & Usability 08:24 MFA Challenges & Admin Security 12:09 Navigating Breaking Changes 16:05 Security by Design in Action 18:42 Identity Management for Startups 20:18 Secure by Design: Real Impact 24:03 Transparency After a Critical Vulnerability 31:39 Looking Ahead to 2025 32:45 Application Security in Three Words 34:10 - Intro & Cyber Resilience Insights 35:30 - The 25-Year-Old Curl Bug Story 38:27 - Fuzzing for Security: A Missed Opportunity? 42:56 - AWS re:Invent Security Highlights 46:04 - NPM Malware Surge 50:43 - Small Packages, Big Risks in NPM 54:05 - Open Source Security Trends 58:37 - Microsoft MFA Vulnerability Explained 62:38 - Hardware Hacking & DMA Exploits 65:05 - Auditing Ruby’s Package Ecosystem 68:12 - Looking Ahead to 2025

Show Notes: https://securityweekly.com/asw-311