Top Penetration Testing Companies in France 2026

• Audience: Security and procurement teams comparing penetration test providers in France.
• Listed first: DeepStrike (publisher of this guide): human-led application, cloud, and infrastructure testing with reproduction evidence and remediation guidance.
• Best for Enterprise: Orange Cyberdefense PASSI qualified at the high level by ANSSI, with pentesters across France and managed security services.
• Best for Offensive Research: Synacktiv offensive security specialist with six French offices, PASSI LPM qualified on all scopes.
• Best for Product and Defense Evaluation: Thales pentesting plus an ITSEF lab for Common Criteria and CSPN evaluations.
• Best for Industrial & OT: Airbus Protect pentesting of embedded, OT, and automotive systems, PASSI RGS and LPM qualified.
• How to Choose: Verify tester credentials OSCP, CISSP, etc., transparency, methodology, and real deliverables avoid generic top # claims or vague marketing. Buyers comparing neighboring EU markets can also weigh the leading penetration testing companies in Italy against the same criteria. Cross-border buyers can also review pentest providers in Luxembourg and penetration testing companies in Portugal.

Choosing the right pentesting partner is crucial in 2026. The market has matured: AI augmented attacks and stricter EU compliance DORA, GDPR mean every organization needs thorough, up to date tests. For example, DORA requires threat led penetration testing (TLPT) for designated financial entities, and GDPR expects regular testing of security measures. DeepStrike, the publisher of this guide, is included in the list. The list order is not a quality ranking; weigh DeepStrike’s entry as you would any vendor’s description of its own service. Each provider is described from its official website, covering services, certifications, scope, and reporting.

Comparing providers beyond France? Our global list of top penetration testing companies covers firms that deliver testing across regions.

For a broader comparison of cybersecurity providers beyond penetration testing, see Top Cybersecurity Companies in France. For background on delivery models, see our guides to penetration testing as a service (PTaaS), continuous penetration testing, penetration testing for DevOps, and penetration testing vs. bug bounty.

How to Choose the Right Penetration Testing Provider

Hiring a pentesting firm is more than just picking a vendor common pitfalls abound. Mistakes & Red flags: Avoid firms that flaunt inflated claims without proof. Verify that the tester team holds recognized certifications OSCP, CISSP, etc. and that individuals can be vetted. Don’t trust generic superlatives like #1 pentest company which may stem from self written blog posts. Ask how much of the testing will be manual, who will perform it, and how automated scanning is used, so a promised manual test is not replaced by scan output. Demand a clear Statement of Work: method black/white/gray box, deliverables, and retesting terms. Firms that hide behind NDAs or vague slideware may be masking a lack of real expertise.

What matters: Focus on experience, transparency, and rigor. A good provider has a documented methodology OWASP, NIST, PTES and shares its approach ahead of time. Check for past case studies or CVEs they’ve disclosed, and whether they offer post test support retests, remediation guidance. Verify their compliance credentials: French regulated firms often prefer ANSSI aligned teams PASSI certified or at least ISO 27001 accreditation. Skip sales buzzwords instead ensure testers can provide real names and verifiable certs on demand. In short, prioritize proven expertise over marketing hype: the best pentest firms have track records of finding serious bugs and explaining them clearly, not just flashy websites.

France Regulatory and Procurement Context

In France, the question is often not just whether to test but who is allowed to test. ANSSI's PASSI qualification, the military programming law (LPM) rules for vital operators, DORA threat-led testing for finance, and GDPR as enforced by the CNIL shape which provider a buyer can use and what the report must show.

• PASSI qualification: ANSSI qualifies security audit providers under the PASSI scheme, with an RGS level for public-sector audits and an LPM level used for operators of vital importance (OIV). Where a contract or regulation requires PASSI, confirm the exact entity, audit activities, and validity on ANSSI's own catalogue rather than on a vendor badge.
• NIS2 status: France has not yet completed NIS2 transposition. The Résilience bill, which covers NIS2, the critical entities directive, and DORA adjustments, was adopted by the Senate in March 2025 and by a National Assembly committee in September 2025; ANSSI states NIS2 will apply only once the law and its decrees are promulgated (ANSSI MonEspaceNIS2 status page). As of early October 2026 the floor debate had been postponed again, so check the status before treating NIS2 duties as in force.
• Financial sector: DORA applies directly. The Banque de France, ACPR, and AMF publish the TIBER-FR guide, now in version 2 (2025), which explains how TIBER-EU and DORA threat-led penetration testing apply to French financial entities; for significant banks under the Single Supervisory Mechanism, the ECB is the TLPT authority.
• Data protection, incidents, and language: The CNIL enforces GDPR, CERT-FR at ANSSI handles national incident response, and public buyers procure under the Public Procurement Code. Expect French-language reports and contracts for public and many private buyers, and agree where test evidence is stored and whether it may leave the EU.

How We Selected These Providers

The candidate pool covered French offensive-security specialists, French defence and aerospace groups with testing labs, and large managed security providers with French pentest teams. For each, we reviewed the provider's own service, certification, and contact pages and, where a provider claims PASSI or other ANSSI qualifications, ANSSI's public catalogue. Criteria were published testing scope, ANSSI qualifications, French delivery footprint, threat-led testing capability, and reporting detail. Profiles reflect desk research checked in November 2026, not hands-on testing. DeepStrike publishes this list and lists itself first; list order is not a quality ranking.

Top Penetration Testing Companies in France 2026

1. DeepStrike: Application testing and remediation collaboration

Public offering: DeepStrike's penetration testing services describe human-led testing across applications, cloud environments, and infrastructure, supported by a findings and collaboration platform. Its public process covers planning, reconnaissance, vulnerability discovery, controlled exploitation, reporting, and technical support. Published reports include reproduction steps, remediation guidance, and root-cause information; the proposal should define exact coverage and commercial terms.

France relevance: Founded in 2016, DeepStrike LLC is headquartered in Newark, Delaware, has 11–50 employees, and also publishes a business address in Dubai, UAE (IFZA Business Park). It delivers testing remotely for French clients; define tester locations, permitted subcontracting, and data-handling restrictions in the engagement agreement.

Team certifications: OSCP, OSWE, OSEP, OSWP, GXPN, GWAPT, eCPPT, eMAPT, eWPT, CREST CPSA, CRTP, CRTE, and Microsoft Azure Security Engineer Associate, as shown on DeepStrike's services page.

Official sources: Pricing , Contact Us

Buyer fit: Engineering teams that need application, cloud, or infrastructure testing with direct remediation collaboration.

2. Orange Cyberdefense: Large-scale ethical hacking with PASSI qualification

Public offering: Orange Cyberdefense's ethical hacking line covers penetration testing, red team and purple team exercises, cloud security testing, code audits, and regulatory audits, including PASSI LPM and RGS audits, tests for NIS2 and PCI DSS, and red team TLPT missions for DORA. The same group runs SOC and CyberSOC services, a CERT, and threat intelligence, so testing can be combined with detection and response.

France relevance: Orange Cyberdefense lists its head office at 54 Place de l’Ellipse, Paris La Défense, and says its pentesters work from cities including Paris, Lyon, Rennes, Lille, Toulouse, Marseille, Nantes, and Bordeaux. Its published ANSSI decision of 11 September 2025 qualifies its audit service at the high level for all five PASSI activities, valid until 9 August 2028; define tester locations and data handling in the agreement.

Certifications: Its certifications page lists ANSSI PASSI (RGS/LPM), PDIS (LPM), and PRIS qualifications, plus PCI QSA and ASV status.

Official sources: https://www.orangecyberdefense.com/fr/solutions/conseil-audit/ethical-hacking-tests-intrusion; https://www.orangecyberdefense.com/fr/

Buyer fit: Large and regulated organisations that need PASSI-qualified audits or DORA TLPT alongside managed security services.

What sets it apart in France: the widest French testing footprint here, with pentesters in eight cities and PASSI, PDIS, and PRIS qualifications under one provider.

3. Thales: Pentesting and security evaluation for critical systems

Public offering: Thales offers offensive security, penetration testing, and red teaming within its cybersecurity services catalogue, alongside audit and risk assessment. Its ITSEF security evaluation lab performs white, grey, and black box pentests on hardware and software products, and evaluates products under Common Criteria and France's CSPN scheme as well as payment and IoT certification programmes.

France relevance: Thales is a French group, and its ITSEF describes itself as endorsed by ANSSI and the French defence procurement agency (DGA). Buyers who require PASSI should confirm the qualified Thales entity and scope on ANSSI’s list, and define tester clearances and data handling in the agreement.

Certifications: Thales states that ANSSI has qualified it as a PASSI audit provider, a PDIS security incident detection provider, and a PRIS incident response provider.

Official sources: https://www.thalesgroup.com/en/solutions-catalogue/cybersecurity/cybersecurity-services/pen-testing-and-red-teaming; https://www.thalesgroup.com/en/solutions-catalogue/itsef-security-evaluation-expertise

Buyer fit: Defence, critical infrastructure, and product manufacturers that need testing tied to formal security evaluation or certification.

What sets it apart in France: an ITSEF evaluation lab endorsed by ANSSI and the DGA, the best fit when a pentest has to support Common Criteria or CSPN product evaluation.

4. Airbus Protect: IT, OT, and embedded systems pentesting

Public offering: Airbus Protect offers internal and external infrastructure, wireless, web, mobile, and cloud penetration testing, plus social engineering, red and purple teaming, hardware hacking, embedded and OT testing of PLCs and industrial control systems, and automotive security testing. It works in black, white, or grey box mode and also provides governance and compliance consulting, a SOC, and a CSIRT.

France relevance: Airbus Protect was created by Airbus in July 2022 and says it has an on-the-ground presence in France and Germany, where its pentesters hold national security clearance. Its certifications page states PASSI RGS and LPM qualification for audits including penetration testing; confirm the scope on ANSSI’s list and define tester locations in the agreement.

Certifications: Airbus Protect lists PASSI RGS and LPM qualification, CREST membership, ISO 27001 and ISO 9001, and Cyber Essentials Plus for its UK operations.

Official sources: https://www.protect.airbus.com/pentest-solutions/; https://www.protect.airbus.com/about-us/our-certifications/; https://www.airbus.com/en/newsroom/press-releases/2022-07-airbus-protect-a-new-global-player-for-cybersecurity-safety-and

Buyer fit: Industrial, transport, and critical infrastructure operators that need IT and OT tested together.

What sets it apart in France: security-cleared pentesters and PASSI RGS and LPM qualification combined with OT, embedded, and automotive testing for French industrial operators.

5. Synacktiv: Offensive security and research specialist

Public offering: Synacktiv offers penetration testing and red teaming, security audits, reverse engineering, development, incident response through its CSIRT, and training. Its red team service is designed for TIBER-EU, DORA, and other threat-led penetration testing frameworks, and its specialised tests cover internal networks, web and mobile applications, CI/CD pipelines, cloud infrastructure, and IoT/OT systems.

France relevance: Synacktiv was founded in 2012 by Nicolas Collignon and Renaud Feil and lists offices in Paris, Toulouse, Lyon, Rennes, Lille, and Bordeaux. It states PASSI LPM qualification on all scopes and ANSSI accreditation as a CESTI for CSPN evaluations; confirm on ANSSI’s list and define data handling in the agreement.

Certifications: Synacktiv lists PASSI LPM qualification, CESTI accreditation by ANSSI, the Cybersecurity Made in Europe label, the ExpertCyber label, and Qualiopi certification for training.

Official sources: https://www.synacktiv.com/en/features/penetration-test-red-team; https://www.synacktiv.com/en/contact

Buyer fit: Organisations that want research-driven manual testing, threat-led red teaming, or deep reverse engineering.

What sets it apart in France: an independent research-led specialist with PASSI LPM on all scopes, ANSSI CESTI accreditation, and red teaming designed for TIBER-EU and DORA TLPT.

6. Intrinsec: Offensive security alongside SOC, CERT, and CTI

Public offering: Intrinsec's offensive security and audit line covers penetration testing, red team and purple team exercises, TIBER-EU and DORA TLPT, and technical audits. It also offers security consulting, a 24/7 SOC with MDR, a CERT for incident response, cyber threat intelligence, and security architecture and integration.

France relevance: Intrinsec says it has operated for more than 30 years, has about 250 employees, and publishes French phone contacts and four points of presence. Its site states PASSI qualification at the high level across audit activities and PRIS qualification for incident response; ANSSI’s October 2026 catalogue lists Intrinsec for PRIS but not PASSI, so confirm the current status before relying on it for a qualified audit, and define data handling in the agreement.

Certifications: Intrinsec lists PASSI qualification at the high level and PRIS qualification from ANSSI, with PACS qualification in progress, and membership of InterCERT France and Campus Cyber. ANSSI’s October 2026 catalogue confirms the PRIS qualification but does not list Intrinsec as a PASSI provider.

Official sources: https://www.intrinsec.com/test-intrusion/; https://www.intrinsec.com/Contact

Buyer fit: Mid-size and large organisations that want testing, detection, and incident response from one French provider.

What sets it apart in France: a long-established French provider that combines PASSI-qualified testing and TIBER-EU or DORA TLPT with its own SOC, CERT, and threat intelligence.

7. Acylia: Small Nantes team for pentests and code audits

Public offering: Acylia offers external, internal, web, and application penetration testing, source code audits, and cybersecurity and hacking training for students and companies. Its reports describe each vulnerability with evidence, severity and CVSS scores, corrective measures, and business impact for executives.

France relevance: Acylia is a French EURL with its registered address at 3 Place Emile Sarradin, 44000 Nantes. Its site does not mention certifications or a retest policy, so ask about tester credentials, retesting, and data handling before contracting.

Official sources: https://www.acylia.com/fr/services/penetration-test/; https://www.acylia.com/fr/contact/

Buyer fit: Small and mid-size organisations with custom software that want a hands-on pentest or code audit from a small French team.

What sets it apart in France: a small Nantes team for buyers that do not need PASSI and want a hands-on test or code audit; it is the only entry here without published qualifications.

8. Almond: PASSI-qualified audits and pentests, now including Amossys

Public offering: Almond is a French cybersecurity, cloud, and infrastructure group whose services span audits and penetration testing, governance and compliance, cyber threat intelligence, training, and a SOC-CERT. In February 2023 it acquired Amossys, a Rennes-based firm known for audits and security product evaluations.

France relevance: Almond is headquartered in Sèvres and says its PASSI qualification covers penetration testing, architecture, configuration, source code, and organisational and physical audits. Older certificates may still carry the Amossys name, so confirm the current qualified entity and scope on ANSSI’s list.

Certifications: Almond lists PASSI qualification, PCI QSA status, ANJ auditor approval, and the France Cybersecurity label.

Official sources: https://almond.eu/cybersecurity/; https://almond.eu/communique-de-presse/almond-annonce-lacquisition-damossys-et-renforce-ses-positions-dans-la-cybersecurite/

Buyer fit: Regulated French organisations that need qualified audits, PCI DSS assessments, or product security evaluations.

What sets it apart in France: PASSI qualification across audit types plus PCI QSA status and ANJ auditor approval, useful for French payment and online gaming operators.

Enterprise vs SMB: Which Provider Type Do You Need?

French enterprises, public bodies, and vital operators usually need a PASSI-qualified provider with French-language reporting and capacity for several parallel tests. SMBs and software teams without a PASSI requirement can often get more value from a smaller specialist focused on manual application, API, and cloud testing. Start from whether a qualification is required, then compare depth.

Large Enterprises: Big companies often need vendors with global reach and formal processes. Firms like Orange Cyberdefense or Thales or Accenture, Deloitte, Capgemini, etc. have multiple teams worldwide and can handle simultaneous tests across continents. They usually offer turnkey services audit packs, compliance reporting, executive risk dashboards. The trade off is less flexibility and higher cost. However, if you must satisfy regulators e.g. ANSSI, DORA, ISO auditors at scale, their formal certifications and project management can be worth it. Large orgs may also prefer a blended model: internal security engineers plus external auditors for objectivity. In that case, using a big vendor’s managed security division with in-house pentesters can fit both needs.

SMBs and Agile Teams: Smaller firms or digital native companies may benefit from boutique specialists like DeepStrike or Synacktiv. These providers can often start projects faster, tailor the scope tightly, and focus on developer readability of results. An SMB pentest budget might go further with a lean team that doesn’t bundle unnecessary services. Also, for fast moving tech startups, cloud apps, continuous models or on demand tests ensure security keeps up with releases. Boutique vendors are usually happy to double as consultants or trainers during downtime, whereas large consultancies stick strictly to the contracted plan.

Cost vs Value: Cheaper isn’t always better. Very low cost scans often automated can miss critical holes. Conversely, the most expensive vendor isn’t automatically the best pay attention to what you get. For example, DeepStrike’s published Basic plan lists 12 months of remediation retesting, with no numeric price displayed. Some clients prefer that value over paying per engagement from scratch every year. Ultimately, match your risk appetite: if customer data and reputation are on the line, investing in a thorough test usually pays off by preventing breaches the average global breach cost reached a record $4.99M in 2026 according to IBM. Consider also a hybrid approach: run automated scans continuously or via SaaS VM tools and schedule at least one manual pentest per year to catch logic flaws. Such a blended program for example, security testing programs that validate authentication controls or continuous pentesting can maximize ROI in the long run.

FAQs

• How much do penetration testing services cost?

Costs vary widely by scope, and this guide does not quote price ranges because no public, verifiable price data for the French market supports them. Many proposals are built on tester-days, so compare the number of days, testers, and retests in each quote rather than the headline total. The main cost drivers are the number of applications, hosts, or APIs in scope, authenticated versus unauthenticated testing, red-team or social-engineering components, and whether you need a PASSI-qualified provider. Beware unusually low quotes: they may only cover automated scans, not manual testing. Always clarify what’s included: number of testers, duration, retesting, and deliverables.

• Are certifications more important than tools?

Both matter, but certifications ensure expertise. Having OSCP/OSCE or CREST certified testers shows a baseline of skill, whereas tools alone even state of art scanners can’t find all flaws. A good pentest provider will use industry standard tools and know how to customize them. In fact, many top vendors DeepStrike, Synacktiv, Orange pride themselves on expert-led testing rather than automated only scans. Tools should not replace human creativity. So prioritize a certified, experienced team the one that understands your architecture and uses tools as just part of the process.

• How long does a pentest take?

Typical engagements run from a few days to a few weeks. A small application test might be 3–5 days of effort; a full internal network assessment could be 2+ weeks plus reporting time. Complex red team exercises might span a month. Larger firms like Orange or Thales usually plan more lead time to coordinate. Note that fast turnaround often costs more if you need a 2 week audit in 2 days, that’s rush pricing. Many providers now offer continuous or on demand testing PTaaS, where you can launch shorter scans via a platform anytime.

• What should be included in a good pentest report?

Look for clarity and actionability. At minimum: Executive summary of risks, prioritized list of findings, technical details proof of concept, and remediation advice. The best reports tie issues to business impact e.g. potential data loss from a vulnerability. Importantly, the report should clearly explain the methodology and assumptions used black box vs white box, etc.. It should mention whether credentials were given, and it should list the testers’ roles/certifications or at least state they are certified. Post engagement support like a walkthrough of findings and a period of free retesting is also highly valuable check if it’s part of the package.

• How often should testing be done?

Regular testing is crucial. As a rule of thumb, do a full pentest after any major tech change new app, cloud migration, etc. or at least annually. However, one shot tests aren’t enough: vulnerabilities and threats evolve fast. Ideally implement continuous security testing or quarterly scans, supplemented by annual or semi annual full manual tests. Many organizations now run quarterly or continuous testing cadences for fast changing systems. Also, regulatory audits like ISO 27001 recertification often require documented pentests. So align your testing frequency with both risk levels and compliance calendars.

• How do I verify a pentester’s claims?

Besides checking certifications, ask for sample reports or case studies sanitized of course. You can ask a prospective vendor to name a recent vulnerability they found without sensitive details and how it was exploited. See if they are willing to provide client references or public testimonials. Also verify any claimed government ties as a red flag guide warns against fake government logos. In short, do some due diligence many red flags fake reviews, NDA driven silence, etc. are discussed in online guides, so be prepared to spot them.

In the end, the right penetration testing company, whether DeepStrike or another provider on this list, is the one that fits your needs, not just the shiniest name. We’ve compared these providers on published services, qualifications, French presence, and stated limits, using each firm’s official sources. Remember: a credential stuffed resume and flashy marketing don’t guarantee results. Vet each candidate thoroughly, ask tough questions, and look for transparent answers. By focusing on a provider’s methodology and track record rather than hype, you’ll make a confident choice. The same evaluation applies across the border; see the penetration testing companies in Switzerland for that market.

Finally, the most important step is staying proactive. Tools and threats are constantly changing. Once you choose a partner, keep evaluating and evolving your security testing program. With the right team of certified testers, clear reporting, and continuous validation, you’ll be equipped to uncover vulnerabilities before attackers do. Make an informed decision, and strengthen your defenses with the expertise that suits your scale and risk profile. If your scope crosses into the Benelux market, the same criteria apply to the penetration testing companies in Belgium.

Ready to Strengthen Your Defenses? The threats of 2026 demand more than just awareness; they require readiness. If you're looking to validate your security posture, identify hidden risks, or build a resilient defense strategy, DeepStrike is here to help. Our team of practitioners provides clear, actionable guidance to protect your business. Explore our Penetration Testing Services to see how we can uncover vulnerabilities before attackers do. Drop us a line, we’re always ready to dive in. Service-specific pages cover web application, mobile application, and cloud penetration testing, and our HubSpot account takeover write-up shows how a published finding is documented.

About the Author: Mohammed Khalil is a Cybersecurity Architect at DeepStrike, specializing in advanced penetration testing and offensive security operations. With certifications including CISSP, OSCP, and OSWE, he has led numerous red team engagements, focusing on cloud security, application vulnerabilities, and adversary emulation. His work involves dissecting complex attack chains and developing resilient defense strategies for clients in the finance, healthcare, and technology sectors.