Technical audit, application security and GDPR compliance
We audit, secure, and bring your business applications into compliance, from source code to infrastructure, including personal data processing procedures.
Are your applications truly reliable, secure, and compliant ?
We intervene on the six blind spots that expose business Information Systems to identify your real risks, not just to tick boxes.
Your application vulnerabilities are not measured
SQL injections, XSS, CSRF, authentication flaws, poor session management : without regular audits, these flaws silently accumulate in your code and expose your data with every deployment.
Your technical debt hinders your progress
The code has become so tangled that every modification is slow, costly, and causes regressions. Your teams spend more time fixing than building, without any quantified diagnosis having been made.
Your GDPR compliance is partial or theoretical
Incomplete processing register, poorly collected consents, retention periods not applied, data subject rights not equipped : GDPR non-compliance can cost up to 4% of annual global turnover.
Your performance cannot handle the load
The application lags, can no longer support usage growth, and pages take several seconds to load. You suffer incidents instead of anticipating load increases with stress tests and targeted optimizations.
Your open-source dependencies are a black box
Your applications rely on hundreds of third-party libraries. Without SBOM or active CVE monitoring, you are unaware of which critical flaws are already present in your production code.
Your development chain has no safeguards
No SAST/DAST analysis, no security gates before production release, no artifact signing, secrets in the code : your software supply chain is only as secure as its weakest link.
The types of audits we conduct
From a one-off diagnosis to continuous regulatory support, we adapt our intervention to your maturity level, your legal obligations, and your business challenges.
Architecture audit
Global vision of the organization of your Information System applications and associated data exchanges. Architecture design and analysis are at the heart of our business: we evaluate the robustness, scalability, security of your IS, and load handling.
Architecture · Scalability · RobustnessCode quality & application security audit
Code quality analysis, technical debt measurement, and security-oriented review (OWASP Top 10, CWE/SANS Top 25). We are very often called upon as an external expert, whether to evaluate the need for a redesign or the potential of an application before an acquisition.
OWASP · SAST/DAST · MaintainabilityOrganizational audit
An external perspective on your organization to implement working methods, agile or otherwise, that meet your challenges. We define the tailor-made organization that maximizes your resources' potential while meeting your business challenges.
Agility · Governance · ProcessGDPR audit & compliance
Processing mapping, legal basis analysis, consent audit, register setup, DPIA for high-risk processing, tooling for data subject rights. Preparation for ISO 27001, HDS, PCI-DSS, DORA, and NIS2 frameworks depending on your sector.
GDPR · ISO 27001 · HDSThe tools and standards we rely on
We combine mature open-source tooling, recognized frameworks, and human expertise because no scanner can replace a business-oriented code review.
An auditor does not deliver a 200-page PDF. Based on your criticality level, we select the tools, frameworks, and depth of analysis that will produce an action plan concretely executable by your teams, not a library of theoretical recommendations.
Ready to secure your IS and achieve compliance ?
Don't let a known flaw or a GDPR discrepancy compromise your business. Free technical audit in 5 days.
Actionable deliverables to steer your security and compliance
You retain full control over the evolution of your IS.
Each audit delivers a quantified, prioritized diagnosis that is usable by your teams, not a theoretical report.
You own 100% of all deliverables, scripts, and configurations.
We document every vulnerability, every compliance gap, and every fix with a level of detail sufficient for any technical team to take over the work. At each step, you receive structured content that complies with frameworks (OWASP, CNIL, ISO 27001) and can be presented in the event of a regulatory inspection. This guarantees an auditable, traceable, and defensible security approach facing a regulator.
Audit report & risk matrix
Comprehensive diagnosis of vulnerabilities and friction points identified, classified by criticality (CVSS for security), estimated business impact, and a costed and prioritized remediation plan.
GDPR compliance plan
Up-to-date processing register, DPIA for high-risk processing, legal notice templates, rights management procedures, and support in appointing a DPO if necessary.
Dependency mapping & SBOM
Complete Software Bill of Materials of your application, identification of active CVEs, prioritized update recommendations, and implementation of automated monitoring.
Hardened CI/CD pipeline
Integration of SAST/DAST/SCA tools into your deployment chain, configuration of security gates, implementation of secrets management, and artifact signing.
Documentation & incident playbooks
Incident response procedures, CNIL notification plans in case of a data breach, runbooks for the technical team, and RACI matrices for sensitive roles.
Why our clients entrust us with their IS audit
No vague promises. Concrete, measurable, contractual commitments.
From diagnosis to lasting compliance in 4 steps
An iterative method to produce value from the first week, not after six months of reports.
Scoping & perimeter
Identification of assets to audit, applicable frameworks (GDPR, ISO 27001, HDS, sector-specific), operational constraints, and compliance objectives.
1–2 weeksAudit & diagnosis
Code review, automated analyses, interviews with teams, targeted penetration tests, and data processing mapping. Production of the quantified risk matrix.
2–4 weeksRemediation plan
Construction of the prioritized action plan, costing of tasks, sequencing compatible with your product roadmap, facilitating workshops with your teams for validation.
1–2 weeksImplementation & verification
Supporting teams in correcting vulnerabilities, hardening CI/CD, deploying monitoring tools, and a final control audit.
ContinuousThe experts who audit and secure your applications
Senior profiles, specializing in application security, regulatory compliance, and critical IS.
Our other areas of expertise
Frequently asked questions about technical auditing and GDPR compliance
How much does a technical audit cost ?
The budget depends on the scope (single application or entire IS), the desired depth (black box, grey box, white box audit), and the targeted frameworks.
What is the timeframe to get a usable report ?
A standard application audit is delivered in 3 to 5 weeks : 1 to 2 weeks of scoping, 2 to 4 weeks of auditing, then the debriefing. For a complete GDPR compliance of an organization, expect 2 to 4 months depending on the complexity of your processing and the initial maturity level.
What is the difference between a security audit and a pentest ?
A security audit covers the entire surface (code, architecture, infrastructure, processes, dependencies) with a white box approach: our experts have access to the source code. A pentest simulates a real attack in a black or grey box, without source code access, on a limited scope. Both are complementary: the audit identifies the root causes, the pentest validates real exploitability.
How does the GDPR compliance of an existing application work ?
We start with an audit of the processing operations (mapping, legal basis, retention periods, transfers outside the EU), then we identify the gaps against the regulation’s requirements. The action plan covers both technical aspects (encryption, logging, equipped right to erasure) and organizational ones (register, DPIA, breach procedures). We then support your teams in the implementation.
What happens if you identify a critical vulnerability during the audit ?
We apply a responsible disclosure protocol: immediate alert to your technical referent and your CISO, recommendation for priority remediation, and, if necessary, temporary suspension of the audit to allow for correction. No sensitive information is disseminated outside the scope of the contract.
Can you support us after the audit to correct the vulnerabilities ?
Yes. Our teams can handle the remediation directly (secure refactoring, CI/CD hardening, secrets management setup) or support your internal teams in coaching mode. We also offer Third-Party Application Maintenance (TMA) contracts incorporating a continuous security component (CVE monitoring, updates, periodic audits).
