Philippe Langlois
Angel Investor
Paris, France
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). Heconducted 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.
- Total investments:
- 8
- Last investment:
- Lead investor:
- 13%
Last updated:
For AI agents: llms.txt
Industries Philippe Langlois invests in
Stages Philippe Langlois invests in
Countries Philippe Langlois invests in
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
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Investment Focus
Industry
- Security 4 (50%)
- Cyber Security 4 (50%)
- Software 3 (38%)
- SaaS 2 (25%)
- Cloud Security 2 (25%)
Stage
- Seed 7 (88%)
- Pre-Seed 1 (13%)
Country
- France 6 (75%)
- United States 2 (25%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Escape helps Application Security teams automate API discovery, API inventory, and API security testing through agentless scanning. It leverages generative AI to discover and secure all your exposed APIs. You can test OWASP Top 10 and complex logic flaws at scale and empower your developers to adopt security in CI/CD. Escape requires noconfiguration to get started, no agent, and no proxy. It excels in securing GraphQL APIs. | $3.9M / Seed / Jun 05, 2023 | ||
| Keystrike provides cybersecurity services. The company also provides enterprise solutions. | $850K / Pre-Seed / Feb 15, 2023 | ||
| Cryptosense software is based on technology developed by one of the world’s leading applied cryptography labs. The rules and algorithms used by their flagship product CS Analyzer to detect cryptographic vulnerabilities are constantly updated thanks to internal R&D and partnerships with labs in the research community. Customers includetechnology companies, payment systems operators, banks, secure hardware and software manufacturers, and multinational financial services corporations. | Seed / Apr 09, 2013 | ||
| Each time you share a digital document, the minute you've sent it, you are no longer in control.docTrackr helps businesses keep their documents under control, wherever they're stored, whomever they're shared with - i.e. you can remotely destroy them, update them and know what people are doing with them in real-time.doctrackr's technology was designed to protect the most sensitive documents in business. docTrackr provides advanced document intelligence and control, giving enterprises complete visibility into document usage. With docTrackr, managers can control permissions, track usage, and even destroy documents remotely. All through all through an easy to use dashboard.They are complementary to document management platforms such as Dropbox, Box.net or Google Drive. docTrackr continues to provide a benefit to their users even once the documents are extracted from their platform and redistributed.docTrackr was part of TechStars – #1 startup accelerator in the world – and is based in the USA (Boston – MA) and in Europe (Paris – France; Bucharest – Romania), and backed by Polaris Ventures and Atlas Ventures.It was acquired by Intralinks.com for $10 million dollars cash. | Seed / Apr 13, 2011 | ||
| P1 Security is dedicated to providing top security products and services for high-expertise security areas. Founded by experts in Security and Enterprise software and services, P1 Security places its value in maturity of security planning and implementation, while preserving the clients business.P1 Security is headed by Philippe Langlois,founder of Qualys (world leader of vulnerability assessment service), INTRINsec (European consulting company, first to launch penetration testing in France and one of the earliest Payment Gateway security technology provider), Telecom Security Task Force (Research think tank and consulting network in Telecom sector), WaveSecurity (Wireless networks security technology manufacturer). | Seed / Jan 26, 2011 | ||
| INTRINsec offers incident response and crisis management services. They provide a platform that supports the rationalization, complementarity, simplification, and fluidification of cyber security activities. | Seed / Jan 01, 1995 | ||
Worldnet
|
Worldnet was one of the first ISP in France. Co-founded by Sébastien Socchard, Philippe Langlois and Pierre Séguret. The internet linked was financed by Xavier Niel who is well known for Free.fr ISP and Mobile phone company. Xavier Niel later bought shares from Philippe Langlois, Pierre Séguret and Sébastien Socchard and became a major shareholderof Worldnet. Worldnet was sold to Kaptech, later bought by SFR, one of the current mobile phone operator of France. | Seed / Jan 01, 1993 | |
| The Qualys Cloud Platform and integrated suite of solutions helps businesses simplify security operations and lower the cost of compliance by delivering critical security intelligence on demand and automating the full spectrum of auditing, compliance and protection for IT systems and web applications.Used by more than 7,700 customers in over100 countries, including a majority of each of the Forbes Global 100 and Fortune 100, the Qualys Cloud Platform performs more than 1 billion IP scans/audits a year resulting in over 400 billion security events.Founded in 1999, Qualys has established strategic partnerships with leading managed service providers and consulting organizations including BT, Dell SecureWorks, Fujitsu, IBM, NTT, Symantec, Verizon, and Wipro. The company is also a founding member of the Cloud Security Alliance (CSA).The Qualys Cloud Platform and its integrated suite of security and compliance applications provides organizations of all sizes with a global view of their security and compliance solutions, while drastically reducing their total cost of ownership. Qualys solutions include: continuous monitoring, vulnerability management, policy compliance, pci compliance, questionnaire service, web application scanning, web application firewall, malware detection and SECURE Seal for security testing of web sites. | Seed |
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FAQ
What does Philippe Langlois invest in?
Philippe Langlois invests primarily in Security, Cyber Security and Software startups, most often at Seed and Pre-Seed stage. Most of the 8 investments tracked by Shizune back companies in France. The Investment Focus section breaks down every industry, stage and country in the portfolio.
How do I contact Philippe Langlois?
Public channels for Philippe Langlois include LinkedIn, X (Twitter) and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
When did Philippe Langlois last invest?
The most recent investment recorded for Philippe Langlois closed in Jun 2023. Shizune tracks 8 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Sep 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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