Pierre Lalet
La Rochelle, Nouvelle-Aquitaine, France
Summary
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Rockstar🎓
Top SchoolPierre Lalet is a cybersecurity engineer based in France with 14 years of experience specializing in exposed attack surface management (EASM) and practical offensive/defensive tooling. He is an active open-source maintainer and contributor to high-profile security projects such as Scapy and Masscan, where his work added protocol support, banner grabbing, and core bug fixes. Pierre has deep backend engineering skills demonstrated by contributions to threat intelligence (Yeti) and reverse-engineering frameworks (miasm), including JVM bytecode support and authentication integrations. He combines rigorous academic training from ENSEIRB-MATMECA with a pragmatic focus on observable-driven security, notably integrating IVRE data into analytics workflows. Known for improving tooling reliability and expanding protocol coverage, he bridges low-level network protocol knowledge with scalable security automation.
14 years of coding experience
Associate's Degree - Preparatory Classes for the Grandes Écoles, Mathematics, Physics, Associate's Degree - Preparatory Classes for the Grandes Écoles, Mathematics, Physics at Lycée Pierre De FermatEngineer's Degree, Informatique, Engineer's Degree, Informatique at ENSEIRB-MATMECA
English, Spanish, French, German
Stackoverflow
6,127reputation
643kreached
212answers
2questions
networking
top-5%
tcp
top-5%
python
top-5%
Github Skills (51)
udp10
debug10
python10
back-end-development10
infosec10
ip10
user-authentication10
authentication10
port-scanning10
c1110
network-programming10
mongodb-database10
c1710
threat-intelligence10
network-protocol10
Programming languages (14)
Github contributions (5)
secdev/scapy
May 2016 - Jan 2023
Scapy: the Python-based interactive packet manipulation program & library.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:226 reviews, 800 commits, 931 PRs in 6 years 9 months
Contributions summary:Pierre's contributions primarily focused on enhancements to the Scapy library, addressing documentation updates and code corrections. Their work involved implementing improvements to existing components, such as updating documentation and adding logic to handling various aspects of the protocol. In addition to this they made changes to several of the modules used in this repository. The user was also responsible for resolving bugs related to the core functions of the library.
pythonpython2manipulationsecurity-toolsscapy
cea-sec/miasm
Aug 2011 - Nov 2019
Reverse engineering framework in Python
Role in this project:Back-end Developer
Back-end DeveloperContributions:4 reviews, 68 commits, 47 PRs in 8 years 3 months
Contributions summary:Pierre primarily contributed to the `miasm` reverse engineering framework, adding and refining JVM bytecode support, which included the implementation of new mnemonics and assembly support. Their work demonstrates a focus on expanding the framework's capabilities to handle Java bytecode. The user's commits show an understanding of Java bytecode structure and how to integrate it within a reverse engineering context.
symbolic-executionemulatorpythonassemblerengineering
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