Critical Thinking - Bug Bounty Podcast
Justin Gardner (Rhynorater) & Joel Margolis (teknogeek)
<p>A "by Hackers for Hackers" podcast focused on technical content ranging from bug bounty tips, to write-up explanations, to the latest hacking techniques.</p>
- 51 minutes 1 secondEpisode 172: Source Code Review Meta Analysis
Episode 172: In this episode of Critical Thinking - Bug Bounty Podcast trying out a new structure of episode: a Meta Analysis of sorts of many Source Code Review techniques. This episode features tips gathered from Shubs, Rafax, and FSI. Justin highlights best approaches, patterns, and common pitfalls.
Follow us on twitter at: https://x.com/ctbbpodcast
Got any ideas and suggestions? Feel free to send us any feedback here: [email protected]
Shoutout to YTCracker for the awesome intro music!
====== Links ======
Follow your hosts Rhynorater, rez0 and gr3pme on X:
Critical Research Lab:
====== Ways to Support CTBBPodcast ======
Hop on the CTBB Discord at https://ctbb.show/discord!
We also do Discord subs at $25, $10, and $5 - premium subscribers get access to private masterclasses, exploits, tools, scripts, un-redacted bug reports, etc.
You can also find some hacker swag at https://ctbb.show/merch!
Today’s Sponsor: Adobe - Get 10% bonus for valid AI vulnerabilities in Adobe Stock and Lightroom Web. Use code: CTBB063026 in your report.
Expires June 30, 2026.
====== This Week in Bug Bounty ======
Open-source security testing: the Bug Bounty guide to code analysis
====== Resources ======
Abusing Windows, .NET quirks, and Unicode Normalization to exploit DNN (DotNetNuke)
====== Timestamps ======
(00:00:00) Introduction
(00:06:49) Tracing Data Flow, knowing where your playload is landing, and developer mistakes.
(00:17:33) Mapping the software
(00:24:46) Sniffing for blood
(00:31:54) Common Patterns and Pitfalls
30 April 2026, 9:00 am - 22 minutes 44 secondsEpisode 171: Path-Scoped Cookie Hacks with Uppercase & Post-based Raw Protobuf XSS
Episode 171: In this episode of Critical Thinking - Bug Bounty Podcast Justin gives us some quick tips from his own hacking, including some clickjacking, using capital letters, and the potential value of leaking ages
Follow us on twitter at: https://x.com/ctbbpodcast
Got any ideas and suggestions? Feel free to send us any feedback here: [email protected]
Shoutout to YTCracker for the awesome intro music!
====== Links ======
Follow your hosts Rhynorater, rez0 and gr3pme on X:
Critical Research Lab:
====== Ways to Support CTBBPodcast ======
Hop on the CTBB Discord at https://ctbb.show/discord!
We also do Discord subs at $25, $10, and $5 - premium subscribers get access to private masterclasses, exploits, tools, scripts, un-redacted bug reports, etc.
You can also find some hacker swag at https://ctbb.show/merch!
Today's Sponsor: Check out ThreatLocker Ringfencing
https://www.criticalthinkingpodcast.io/tl-rf
====== Resources ======
The ultimate Bug Bounty guide to OS command injection vulnerabilities
Critical auth bypass in WordPress Azure AD SSO plugin due to missing OIDC id_token validation
Aituglo featured on YWH
https://www.yeswehack.com/community/developer-aituglo-bug-bounty-story
Adobe will be sponsoring Ekoparty in Miami and hosting a live hacking event on May 21st
https://ekoparty.org/ekoparty-miami-2026-super-live-hacking-event/
====== Resources ======
SVG clickjacking
https://lyra.horse/blog/2025/12/svg-clickjacking/
====== Timestamps ======
(00:00:00) Introduction
(00:06:35) Protobuff XSS
(00:12:51) Leaking Age & CSPTs
(00:15:59) Capital Letters and Clickjacking
23 April 2026, 9:00 am - 32 minutes 50 secondsEpisode 170: Claude Code + Tmux, Websockets, and Other Korea LHE Takeaways
Episode 170: In this episode of Critical Thinking - Bug Bounty Podcast Justin and Joseph their trip to Korea with some quick takeaways from the LHE.
Follow us on twitter at: https://x.com/ctbbpodcast
Got any ideas and suggestions? Feel free to send us any feedback here: [email protected]
Shoutout to YTCracker for the awesome intro music!
====== Links ======
Follow your hosts Rhynorater, rez0 and gr3pme on X:
Critical Research Lab:
====== Ways to Support CTBBPodcast ======
Hop on the CTBB Discord at https://ctbb.show/discord!
We also do Discord subs at $25, $10, and $5 - premium subscribers get access to private masterclasses, exploits, tools, scripts, un-redacted bug reports, etc.
You can also find some hacker swag at https://ctbb.show/merch!
====== Timestamps ======
(00:00:00) Introduction
(00:01:41) Google LHE Debrief
(00:09:27) Old AI Exfils & AI report writing
(00:18:14) Human Tokens
(00:26:13) Protoscope & Caido Websocket Repeater
16 April 2026, 9:00 am - 30 minutes 16 secondsEpisode 169: Attacking OAuth 2.1
Episode 169: In this episode of Critical Thinking - Bug Bounty Podcast gr3pme goes over some of the changes from OAuth 2.0 vs 2.1 and how Hackers can capitalize.
Follow us on twitter at: https://x.com/ctbbpodcast
Got any ideas and suggestions? Feel free to send us any feedback here: [email protected]
Shoutout to YTCracker for the awesome intro music!
====== Links ======
Follow your hosts Rhynorater, rez0 and gr3pme on X:
Critical Research Lab:
====== Ways to Support CTBBPodcast ======
Hop on the CTBB Discord at https://ctbb.show/discord!
We also do Discord subs at $25, $10, and $5 - premium subscribers get access to private masterclasses, exploits, tools, scripts, un-redacted bug reports, etc.
You can also find some hacker swag at https://ctbb.show/merch!
Today's Sponsor: Check out ThreatLocker Ringfencing
https://www.criticalthinkingpodcast.io/tl-rf
====== This Week in Bug Bounty ======
Intigriti is providing free Burp Pro for Hackers!
====== Resources ======
Django-allauth Account Takeover (ZeroPath Audit)
https://zeropath.com/blog/django-allauth-account-takeover-vulnerabilities
CVE-2025-4144: Cloudflare Workers PKCE Bypass
https://github.com/cloudflare/workers-oauth-provider/security/advisories/GHSA-qgp8-v765-qxx9
CVE-2025-54576: OAuth2-Proxy Auth Bypass
https://zeropath.com/blog/cve-2025-54576-oauth2-proxy-auth-bypass
====== Timestamps ======
(00:00:00) Introduction
(00:02:16) OAuth 2.0 Standards
(00:12:08) Agent to Agent Communication
(00:17:19) CVE Case studies
9 April 2026, 9:00 am - 1 hour 35 minutesEpisode 168: XSSDoctor - Client-side Path Traversal Research
Episode 168: In this episode of Critical Thinking - Bug Bounty Podcast we’re getting a visit from the XSS Doctor. Jonathan joins us to go through his Client-side workflow, run labs, and diagnose some bugs live.
Follow us on twitter at: https://x.com/ctbbpodcast
Got any ideas and suggestions? Feel free to send us any feedback here: [email protected]
Shoutout to YTCracker for the awesome intro music!
====== Links ======
Follow your hosts Rhynorater, rez0 and gr3pme on X:
Critical Research Lab:
====== Ways to Support CTBBPodcast ======
Hop on the CTBB Discord at https://ctbb.show/discord!
We also do Discord subs at $25, $10, and $5 - premium subscribers get access to private masterclasses, exploits, tools, scripts, un-redacted bug reports, etc.
You can also find some hacker swag at https://ctbb.show/merch!
Today’s Guest: https://x.com/xssdoctor
====== Resources ======
The Dot-Dot-Slash That Frameworks Hand You: CSPT Across Every Major Frontend Framework
https://lab.ctbb.show/research/the-dot-dot-slash-that-frameworks-hand-you
URL validation bypass cheat sheet
https://portswigger.net/web-security/ssrf/url-validation-bypass-cheat-sheet
====== Timestamps ======
(00:00:00) Introduction
(00:01:37) Home Automation AI Hack & E-signature bug stories
(00:12:15) E-signature bug
(00:17:01) XSS DR Intro and Bug Bounty Journey
(00:31:51) CSPT Workflows
(01:07:57) Wildcard Path Parameters
(01:30:34) Custom Sinks
2 April 2026, 9:00 am - 51 minutes 40 secondsEpisode 167: Stealing Bugs with Valeriy Shevchenko
Episode 167: In this episode of Critical Thinking - Bug Bounty Podcast we welcome Valeriy Shevchenko to talk about program management, anchor programs, and Theft in Bug Bounty.
Follow us on twitter at: https://x.com/ctbbpodcast
Got any ideas and suggestions? Feel free to send us any feedback here: [email protected]
Shoutout to YTCracker for the awesome intro music!
====== Links ======
Follow your hosts Rhynorater, rez0 and gr3pme on X:
Critical Research Lab:
====== Ways to Support CTBBPodcast ======
Hop on the CTBB Discord at https://ctbb.show/discord!
We also do Discord subs at $25, $10, and $5 - premium subscribers get access to private masterclasses, exploits, tools, scripts, un-redacted bug reports, etc.
You can also find some hacker swag at https://ctbb.show/merch!
Today's Sponsor: Check out ThreatLocker Ringfencing
https://www.criticalthinkingpodcast.io/tl-rf
Today’s Guest: https://x.com/Krevetk0Valeriy
====== This Week in Bug Bounty ======
HackerOne’s Bug Bounty Maturity Framework:
https://www.hackerone.com/blog/program-maturity-framework-bug-bounty-operations
Intigriti is hiring a Product Security Analyst
https://jobs.criticalthinkingpodcast.io/jobs/product-security-analyst-25ef4706
====== Resources ======
Valeriy’s Blog
====== Timestamps ======
(00:00:00) Introduction
(00:03:15) Valeriy's Bug story
(00:19:48) Anchor Programs and Bug Hunting Motivation
(00:29:50) Stealing Bugs
26 March 2026, 9:00 am - 53 minutes 2 secondsEpisode 166: Rez0’s Top Claude Skill Secrets
Episode 166: In this episode of Critical Thinking - Bug Bounty Podcast we talk about Rez0’s Claude Skill Secrets, when AI Generated reports fall apart, and agents vs filters.
Follow us on twitter at: https://x.com/ctbbpodcast
Got any ideas and suggestions? Feel free to send us any feedback here: [email protected]
Shoutout to YTCracker for the awesome intro music!
====== Links ======
Follow your hosts Rhynorater, rez0 and gr3pme on X:
Critical Research Lab:
====== Ways to Support CTBBPodcast ======
Hop on the CTBB Discord at https://ctbb.show/discord!
We also do Discord subs at $25, $10, and $5 - premium subscribers get access to private masterclasses, exploits, tools, scripts, un-redacted bug reports, etc.
You can also find some hacker swag at https://ctbb.show/merch!
Today’s Sponsor: Adobe
====== This Week in Bug Bounty ======
Intigriti launched their ambassadors program. https://www.intigriti.com/ambassador
Adobe will be at Hack The Bay
Bug Bounty Maturity Framework
https://bugbountymaturity.com/
====== Resources ======
h1-brain
https://github.com/PatrikFehrenbach/h1-brain
caido skills
http://github.com/caido/skills
Tweet from Karpathy
https://x.com/karpathy/status/2031767720933634100?s=20
Find every inefficiency in your Claude workflow with one prompt
https://x.com/shannholmberg/status/2030605364421595468
====== Timestamps ======
(00:00:00) Introduction
(00:08:28) Claude skills
(00:30:00) How AI Generated reports fall apart
(00:38:44) Orchestration
(00:49:10) Agents vs Folders
19 March 2026, 9:00 am - 44 minutes 23 secondsEpisode 165: Protobuf Hacking, AI-Powered Bug Hunting, and Self-Improving Claude Workflows
Episode 165: In this episode of Critical Thinking - Bug Bounty Podcast Justin recaps his Zero Trust World experience, before we dive into Permissions issues client-side bugs, New Hardware Hacking Classes, and using AI to hack.
Follow us on twitter at: https://x.com/ctbbpodcast
Got any ideas and suggestions? Feel free to send us any feedback here: [email protected]
Shoutout to YTCracker for the awesome intro music!
====== Links ======
Follow your hosts Rhynorater, rez0 and gr3pme on X:
Critical Research Lab:
====== Ways to Support CTBBPodcast ======
Hop on the CTBB Discord at https://ctbb.show/discord!
We also do Discord subs at $25, $10, and $5 - premium subscribers get access to private masterclasses, exploits, tools, scripts, un-redacted bug reports, etc.
You can also find some hacker swag at https://ctbb.show/merch!
Today's Sponsor: Check out ThreatLocker Ringfencing
https://www.criticalthinkingpodcast.io/tl-rf
====== Resources ======
bbscope Update
https://x.com/sw33tLie/status/2029344643154919720
Matt Brown's Youtube Channel
https://www.youtube.com/channel/UC3VDCeZYZH7mCihtMVHqppw
Matt's Twitter:
MCP server for HackerOne to search reports
https://x.com/OriginalSicksec/status/2029503063095124461?s=20
Caido Skills
https://github.com/caido/skills
The Agentic Hacking Era: Ramblings and a Tool
https://josephthacker.com/hacking/2026/03/06/the-agentic-hacking-era.html
Announcing AI-driven Caido
https://caido.io/blog/2026-03-06-caido-skill
====== Timestamps ======
(00:00:00) Introduction
(00:06:23) bbscope report dumping & Matt Brown Training
(00:13:10) MCP server for HackerOne to search reports & protobuff success
(00:24:24) Hacking Mics with Permissions issues client-side bugs
(00:27:26) Can AI Hack things?
12 March 2026, 9:00 am - 1 hour 11 minutesEpisode 164: Tommy DeVoss: From Black Hat to Bug Bounty LEGEND
Episode 164: In this episode of Critical Thinking - Bug Bounty Podcast Justin sits down with Tommy DeVoss to talk about his origin story, Yahoo bugs, and how Tommy first got Justin into Bug Bounty
Follow us on twitter at: https://x.com/ctbbpodcast
Got any ideas and suggestions? Feel free to send us any feedback here: [email protected]
Shoutout to YTCracker for the awesome intro music!
====== Links ======
Follow your hosts Rhynorater, rez0 and gr3pme on X:
Critical Research Lab:
====== Ways to Support CTBBPodcast ======
Hop on the CTBB Discord at https://ctbb.show/discord!
We also do Discord subs at $25, $10, and $5 - premium subscribers get access to private masterclasses, exploits, tools, scripts, un-redacted bug reports, etc.
You can also find some hacker swag at https://ctbb.show/merch!
Today’s Guest: https://x.com/thedawgyg
====== This Week in Bug Bounty ======
Python pitfalls: Turning developer mistakes into vulnerabilities
====== Timestamps ======
(00:00:00) Introduction
(00:06:22) Yahoo SSRF
(00:14:56) Tommy's Origin
(00:44:10) Bug Bounty
(00:51:47) SSRF Attraction, AI implementation, & Browser Hacking
5 March 2026, 10:00 am - 1 hour 8 minutesEpisode 163: Best Technical Takeaways from Portswigger Top 10 2025
Episode 163: In this episode of Critical Thinking - Bug Bounty Podcast It’s that time of year again! We’re looking at the Portswigger Research list of top 10 web hacking techniques of 2025.
Follow us on twitter at: https://x.com/ctbbpodcast
Got any ideas and suggestions? Feel free to send us any feedback here: [email protected]
Shoutout to YTCracker for the awesome intro music!
====== Links ======
Follow your hosts Rhynorater, rez0 and gr3pme on X:
Critical Research Lab:
====== Ways to Support CTBBPodcast ======
Hop on the CTBB Discord at https://ctbb.show/discord!
We also do Discord subs at $25, $10, and $5 - premium subscribers get access to private masterclasses, exploits, tools, scripts, un-redacted bug reports, etc.
You can also find some hacker swag at https://ctbb.show/merch!
====== Resources ======
Parser Differentials: When Interpretation Becomes a Vulnerability
https://www.youtube.com/watch?v=Dq_KVLXzxH8
XSS-Leak: Leaking Cross-Origin Redirects
https://blog.babelo.xyz/posts/cross-site-subdomain-leak/
Playing with HTTP/2 CONNECT
https://blog.flomb.net/posts/http2connect/
Next.js, cache, and chains: the stale elixir
https://zhero-web-sec.github.io/research-and-things/nextjs-cache-and-chains-the-stale-elixir
SOAPwn: Pwning .NET Framework Apps Through HTTP Client Proxies And WSDL
https://watchtowr.com/wp-content/uploads/SOAPwnwatchtowr_soappwn-research-whitepaper_10-12-2025.pdf
Cross-Site ETag Length Leak
https://blog.arkark.dev/2025/12/26/etag-length-leak
Lost in Translation: Exploiting Unicode Normalization
https://www.youtube.com/watch?v=ETB2w-f3pM4
ORM Leaking More Than You Joined For
https://www.elttam.com/blog/leaking-more-than-you-joined-for/
Novel SSRF Technique Involving HTTP Redirect Loops
https://slcyber.io/research-center/novel-ssrf-technique-involving-http-redirect-loops/
Successful Errors: New Code Injection and SSTI Techniques
https://github.com/vladko312/Research_Successful_Errors
====== Timestamps ======
(00:00:00) Introduction
(00:02:33) Parser Differentials: When Interpretation Becomes a Vulnerability
(00:11:02) XSS-Leak: Leaking Cross-Origin Redirects
(00:18:25) Playing with HTTP/2 CONNECT
(00:22:10) Next.js, cache, and chains: the stale elixir
(00:29:15) SOAPwn: Pwning .NET Framework Apps Through HTTP Client Proxies And WSDL
(00:34:27) Cross-Site ETag Length Leak
(00:41:47) Lost in Translation: Exploiting Unicode Normalization
(00:47:27) ORM Leaking More Than You Joined For
(00:54:07) Novel SSRF Technique Involving HTTP Redirect Loops
(00:58:40) Successful Errors: New Code Injection and SSTI Techniques
26 February 2026, 10:00 am - 53 minutes 22 secondsEpisode 162: HackerOne Training AI on Bug Bounty Data?
Episode 162: In this episode of Critical Thinking - Bug Bounty Podcast Justin and Joseph sit down with HackerOne Founder & CTO Alex Rice to discuss concerns of Using Hacker Data for AI and decreasing bounties.
Follow us on twitter at: https://x.com/ctbbpodcast
Got any ideas and suggestions? Feel free to send us any feedback here: [email protected]
Shoutout to YTCracker for the awesome intro music!
====== Links ======
Follow your hosts Rhynorater, rez0 and gr3pme on X:
Critical Research Lab:
====== Ways to Support CTBBPodcast ======
Hop on the CTBB Discord at https://ctbb.show/discord!
We also do Discord subs at $25, $10, and $5 - premium subscribers get access to private masterclasses, exploits, tools, scripts, un-redacted bug reports, etc.
You can also find some hacker swag at https://ctbb.show/merch!
Today's Sponsor: Join Justin at Zero Trust World in March and get $200 off registration with Code ZTWCTBB26
Today’s Guest: https://x.com/senorarroz
====== This Week in Bug Bounty ======
XML external entity: The ultimate Bug Bounty guide to exploiting XXE vulnerabilities
Bug Bounty Maturity Framework
https://bugbountymaturity.com/
====== Resources ======
Confidential Information and Confidentiality Obligations
Ownership and Licenses
https://www.hackerone.com/terms/community#:~:text=8.%20Ownership%20and%20Licenses
I argued with an AI regarding HackerOne using Hacker reports to train PtaaS
https://bugbounty.forum/post/183ff0fc-eb9e-47f8-991d-c0aa5b0bba71
HackerOne PTaaS (likely training their AI on private reports data)
https://www.reddit.com/r/bugbounty/comments/1r5hixk/hackerone_ptaas_likely_training_their_ai_on/
What Makes Agentic PTaaS Different in Real Environments
====== Timestamps ======
(00:00:00) Introduction
(00:08:44) HackerOne AI Terms of Service
(00:24:56) Agentic PTaaS
(00:38:09) Selling data
(00:43:49) Decrease in Bounties
19 February 2026, 10:00 am - More Episodes? Get the App