Julien Vehent
Senior Manager, Detection And Response, Google
Florida, United States
Summary
🤩
Rockstar🎓
Top SchoolJulien Vehent is a seasoned security leader with 15 years of experience building and operating threat detection and DevSecOps programs at scale, now leading Detection and Response for Google’s cloud across North America and Europe. He designed and scaled planet‑scale, low‑latency threat platforms at GCP and previously architected security for 100+ Firefox cloud services at Mozilla, combining hands‑on engineering with strategic program leadership. An author of Securing DevOps and active open‑source maintainer, Julien has made security‑critical contributions to widely used projects like sops and created investigative tools such as MIG and cipherscan. He manages large, globally distributed teams and has a track record of aligning executive stakeholders to fund multi‑year security roadmaps. Known as a crypto‑curious security geek, he blends deep cryptographic and systems expertise with practical incident response and detection engineering. Based in Florida, he brings a rare mix of product, research and operational experience that accelerates secure cloud innovation.
15 years of coding experience
9 years of employment as a software developer
Master Information Security & Risk Management, Master Information Security & Risk Management at Université de PoitiersBachelor of Science Telecommunications Security, Bachelor of Science Telecommunications Security at Université de Tours
French, English
Stackoverflow
109reputation
4kreached
1answer
2questions
Github Skills (47)
javascript10
ssl10
tls1210
python10
apidoc10
amqp10
scripting10
amazon-elasticsearch10
it-security10
bash10
tls1310
security10
mtls10
elasticsearchquery10
script10
Programming languages (21)
Github contributions (5)
mozilla/mig
Aug 2013 - Nov 2017
Distributed & real time digital forensics at the speed of the cloud
Role in this project:
Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:1176 commits, 137 PRs, 349 pushes in 4 years 4 months
Contributions summary:Julien's commits focused on improving the functionality and reliability of the MIG agent by adding support for multiple authentication protocols, allowing connections through HTTP CONNECT proxies, and implementing a channel for processing agent results. The commits also included a migration to the Go standard library's openpgp and a redesign of the directory structure of the project to better align with Go's package management conventions. The work was also extended to the API, providing methods to display the results from the agent and other related enhancements.
distributedspeedforensicsdigital-forensicsreal-time
mozilla/cipherscan
Jul 2013 - Mar 2020
A very simple way to find out which SSL ciphersuites are supported by a target.
Role in this project:Back-end Developer
Back-end DeveloperContributions:192 commits, 61 PRs, 71 pushes in 6 years 9 months
Contributions summary:Julien primarily focused on enhancing the functionality of the `CiphersScan.sh` script. Their work included modifying the script to use local OpenSSL, returning benchmark results in microseconds, and adding features such as scanning all known ciphers and outputting results in JSON format. They also improved the output by adding support for various TLS versions and protocol information.
tlssslsupported
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