- Joined
- Sep 2026
- How they joined
- Directly
- Before Cognition
- CorridorChief Product Officer
- Status
- Current
“There are real safety and security issues raised by AI, but they can be fixed. It's time to get to work instead of freaking out. That's why I'm joining Cognition as CISO.”
- Cognition announced on 2026-10-28 that Corridor is joining Cognition to take Devin Security to the next level; the post by co-founders Jack Cable and Ashwin Ramaswami says they look forward "to work together with Alex Stamos, Cognition CSO, once again" and names President Russell Kaplan as one of Corridor's earliest advisors and CTO Steven Hao.Oct 28, 2026
- Joined Cognition (maker of Devin) as CISO on 2026-09-29, announcing it on LinkedIn and in an X article titled "Why I'm joining Cognition".Sep 29, 2026
- Cognition's acquisition of Corridor came one month after Stamos left Corridor for Cognition.Oct 28, 2026
- Told Axios he joined Cognition not only to defend the company from cyberattacks but to help it ship new security products, including tools that automate the secure SDLC and rewrite legacy enterprise code into modern containerized architectures.Sep 29, 2026
- At Corridor he went from investor and advisor to full-time Chief Product Officer (2025), then on 2026-09-22 announced he was transitioning back to investor and external advisor, writing he helped "turn a great prototype into a product used by happy enterprise customers across the world."Sep 22, 2026When Jack and Ashwin first shared with me with their vision of using AI to finally make software safer and more trustworthy I knew I wanted to be part of their story. I was happy to be an investor and advisor and then to join full-time and help grow the company and turn a great prototype into a product used by happy enterprise customers across the world. It's bittersweet to say, but the company is firing on all cylinders and it's time for me to transition back to being an investor and external advisor cheering on Corridor as they now execute on what seemed like a crazy dream. I'm so apprecia
- On joining, he publicly recruited for his Cognition security team, linking a San Francisco security engineer role at $260,000-$300,000 base plus equity.Sep 30, 2026
- Founded and directed the Stanford Internet Observatory (2018-2023), launched with support from Craigslist founder Craig Newmark; still teaches computer science at Stanford as lecturer.Jul 2019
- Yahoo CISO 2014-2015; in Feb 2015 he publicly challenged NSA Director Michael S. Rogers on encryption backdoors, and resigned in June 2015.Feb 2015
- Co-founded iSEC Partners in 2004 with Joel Wallenstrom, Himanshu Dwivedi, Jesse Burns and Scott Stender; it was acquired by NCC Group in 2010.2004
- In an Oct 2026 interview he said he tells Stanford students not to become CISOs, joking CISO is Greek for the first lamb slaughtered, and argued security executives need lawyers and golden parachutes.Oct 29, 2026
- Told Semafor AI systems "are not conscious, they do not have souls" and urged people to "work the problem" rather than quit and freak everybody out, positioning security, not sci-fi risk, as the real AI safety issue.Oct 7, 2026
- Partner at Krebs Stamos Group (2021-2023) with former CISA director Chris Krebs; the firm was retained by SolarWinds after its breach. SentinelOne acquired KSG, leading to his Chief Trust Officer (2023-2024) and CISO (2024-2025) roles there.2021
Securing the fastest growing company in AI, and building products to help all Enterprises build trustworthy and safe software.
Working to make the AI coding revolution safe and trustworthy.
I currently teach two courses at Stanford, "International Policy 268: Introduction to Cybersecurity (Hack Lab)" in the Fall and "Computer Science 152: Trust and Safety" in the Spring.
After leaving Facebook, I wanted to build an academic basis for understanding and preventing the online abuses I had investigated professionally, in particular foreign information operations and online child exploitation. Over five years, the Stanford Internet Observatory became the world’s premier academic center for this work.
Responsible for protecting SentinelOne and our customers from the world's most advanced adversaries.
During this time I helped lead the strategic advisory and DFIR teams at SentinelOne, working with clients looking to understand their security risks, uplevel their protections, or respond to high risk events.
I founded the Krebs Stamos Group to help uplift the security of companies that are systemically important and targeted by the most sophisticated financial and state-sponsored adversaries. Acquired by SentinelOne in November 2023.
It's been an insane month for cybersecurity teams, and I'm super proud of my @cognition colleagues rolling up their sleeves and shipping. The new Devin Security is the fastest way to find and fix bugs, now offering enterprises Claude Mythos without separate model access.
Fun week! 🐶☕️🔥 Our team at @Cognition has been securing our customers against the latest PHP and Node vulns. To make this easier for everyone, we’ve open-sourced an agent plugin to make this easier for everybody. https://t.co/icKKpZwoGu https://t.co/7nCwvSJjXE
Starting today I will be joining Cognition as CISO. I have dedicated my professional life to trying to make technology safer and more trustworthy, and the next 3-5 years will clearly be the most important period in the history of the security industry. Devin is already the best way to build Enterprise-grade code. I can’t think of a better place to make an impact on the ability of every company, not just the best resourced, to protect themselves, than at Cognition. Here are my thoughts on why security is the real AI safety risk we should be focused on, and how we should approach solving it
There are real safety and security issues raised by AI, but they can be fixed. It's time to get to work instead of freaking out. That's why I'm joining Cognition as CISO. https://t.co/bBkmLJ9eyY
When Jack and Ashwin first shared with me with their vision of using AI to finally make software safer and more trustworthy I knew I wanted to be part of their story. I was happy to be an investor and advisor and then to join full-time and help grow the company and turn a great prototype into a product used by happy enterprise customers across the world. It's bittersweet to say, but the company is firing on all cylinders and it's time for me to transition back to being an investor and external advisor cheering on Corridor as they now execute on what seemed like a crazy dream. I'm so apprecia
I present for your consideration: real sentences from the cyber present. https://t.co/OkJkt3BaAI
https://t.co/kjJiwc7Sev
I'm looking forward to helping monitor the many situations happening today. Tune in around 3pm!
I'm putting this reply on a t-shirt.
Jason is the best.
Glares in Greek
This seems right. https://t.co/8MkXzGiJCT https://t.co/O43SkPp1L0
