# Subho Halder

> Subho Halder is a security researcher and co-founder and CEO of Mattersec Labs, the company behind MATT. He co-founded Appknox in 2014, serving first as CTO and later as CEO before stepping down in March 2026. His work includes Android exploitation tools, developer security tooling, and SecLens, a framework for evaluating AI vulnerability detection.

- **Role:** Co-founder & CEO at Mattersec Labs
- **Organizations:** Mattersec Labs, Appknox, XY Security, Tata Consultancy Services
- **From:** Kolkata, India
- **Education:** Bachelor’s in Electronics and Telecommunication, KIIT University, Bhubaneswar
- **Known for:** Created Android Framework for Exploitation (AFE)., Co-founded Appknox and held technical and executive leadership roles across twelve years., Received joint credit for CVE-2013-0926 in Google Chrome and Apple Safari security disclosures.

## Career timeline

- **2012** — Co-presented Droid Exploitation Saga with Aditya Gupta at Black Hat Abu Dhabi.
- **2013** — Credited alongside Aditya Gupta and Dev Kar for CVE-2013-0926 in Chrome and Safari security updates.
- **2014** — Co-founded Appknox with Harshit Agarwal and Prateek Panda; the company joined JFDI in Singapore.
- **2014** — Taught Android baseband hacking and runtime modification at Black Hat USA’s Mobile Hacking Summit.
- **2017** — Presented Devknox, a security autocorrect tool for Android Studio, at Black Hat Asia.
- **2024** — Became Appknox CEO after earlier technical leadership roles; hosted a developersIndia AMA on October 19.
- **2025** — Listed a KnoxSpy demonstration at Black Hat Europe Arsenal in his talk archive.
- **2026-03** — Announced on March 5 that he was stepping down as Appknox CEO to pursue AI security work.
- **2026-04** — Co-authored the SecLens preprint submitted to arXiv on April 2; published AI Authorship Question on April 23.
- **2026** — Publicly identified as co-founder and CEO of Mattersec Labs, working with co-founder and CBO Aishwarya Jain on MATT.

## Achievements

- Created Android Framework for Exploitation (AFE).
- Co-founded Appknox and held technical and executive leadership roles across twelve years.
- Received joint credit for CVE-2013-0926 in Google Chrome and Apple Safari security disclosures.
- Presented and taught at Black Hat, including the 2012 Abu Dhabi briefing and 2014 USA training.
- Developed Devknox, presented at Black Hat Asia in 2017.
- Lead author of SecLens, which evaluated twelve models using 406 tasks from 93 open-source projects.
- Named as author of the open-source pyaxmlparser Python package.

## Latest updates

- **2026-03** — On March 5 announced he was stepping down as Appknox CEO to build a new AI security company.
- **2026-04** — SecLens preprint submitted April 2; AI authorship scanner walkthrough published April 23.
- **2026-05** — Published Supervisor Agents Don’t Exist Yet on May 21, outlining a proposed supervision layer for AI actions.
- **2026-10** — Research checked October 13: Mattersec Labs publicly lists Halder as co-founder and CEO and Appknox as a distribution partner for MATT.

## Links

- Website: https://subhohalder.com/
- LinkedIn: https://www.linkedin.com/in/subhohalder/
- Twitter/X: https://x.com/sunnyrockzzs
- GitHub: https://github.com/subho007
- Instagram: https://www.instagram.com/sunnyrockzzs/
- Facebook: https://www.facebook.com/subho007/

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Profile page: https://yespress.io/subho-halder
Published by YesPress — https://yespress.io
Last updated: 2026-10-13