Guillaume Leconte

{ Perf oriented architecture to limit the scanner's memory and network footprints, alongside strong parallelism

{ Client-Server architecture to remotely control/query the scanner

{ Design a modular architecture to easily onboard new developers

{ Use of external signatures (Nmap signatures, Nuclei & Jaeles CVE detection, . . . ) along side our own

{ Heavy testing (unit tests, functional tests, . . . )

{ Keywords: Golang, Linux, gRPC, C, GitHub, AWS, . . .

Member of the Qualys Security Advisory Team : source code audit, exploit writing, etc.

{ Details on demand.

{ Keywords: Open Source, C, Linux, Bash, Exploit, Advisories, CVE, Audit

Design and conception of several daemons to extracts data from the network and send them for (malware) analysis.

{ From data link layer to application layer, protocol analysis: Ethernet, IPv4, IPv6, GRE, ARP, ICMP, UDP, TCP, DNS, FTP, HTTP, SMTP

{ Generic module to manage Layer7 connection tracking

{ TCP reassembly, packet loss management, deduplication . . .

{ Use of Qosmos SDK for application layer analysis

{ Developed several drivers to manage data exchange between components, to bench IOPS (on disk, redis, POSIX mqueues . . . ), to link metadata to a given file . . .

{ Significant contributions to the library used by the whole team (from basic data structures to more specific ones: adaptative radix trees, skiplists)

{ Design and implementation of a unified and complete configuration system for daemons (JSON output on demand, real-time value modifications . . . )

{ Keywords: C, Linux, Qosmos, Networking, IOPS, Performances, Threads, Git