About
Philippe Langlois is an Information Security worldwide expert in Network and Telecom with more than 20 years of experience in telecom and network security. He successfully founded several industry-leading companies in security including Qualys (US, NASDAQ: QLYS), INTRINsec (FR), WorldNet (FR), WaveSecurity (US), TSTF (EU) and P1 Security (FR). He conducted security missions such as audit, pentest, hardening, vulnerability analysis, risk analysis and threat intelligence in Telecom and Network domains. Philippe defined new methods and created appropriate tools to audit SS7, IMS and SIGTRAN networks through heavy R&D work. He led world-class pioneering work in vulnerability assessment product development such as in Qualys and INTRINsec. He also led the development of a number of complex system architectures in security products, ASP services and ISP/MSP infrastructures, and built and motivated international engineering teams, around security products and services.
Position in the VCSift Database
- • 136 investors hold the Founder, CEO role in VCSift. Philippe Langlois is one of them.
- • 2,833 investors are based in Paris, Ile-de-France, France.
Data sourced from 410,343 investor profiles. Updated July 2026.
Investment Focus
- Location
- Paris, France
Contact Information
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