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Optimum Web
Penetration Testing — Tier 4
🏢 Enterprise

Enterprise SaaS Penetration Test

Maximum-scope penetration testing for fintech, healthtech, and regulated B2B platforms. Web + API + Cloud + Integrations. Two-tester team with independent QA review.

from€8,000
4–5 weeks

Quick Answer

Maximum-scope penetration testing for Series-A+ SaaS, fintech, healthtech, and regulated B2B platforms. Includes all Tier 3 scope plus cloud infrastructure surface, async/background processing paths, webhook and integration security, SSO/OAuth deep-dive, and custom exploitation development. Delivered by two-tester team (Lead + Senior + QA Reviewer) with independent peer review. 15–22 person-days, delivered in 4–5 weeks. Optional OWASP LLM Top 10 module for AI-powered platforms. From €8,000.

PayPal · SSL Senior only 14-day warranty SEC-PENT-04

Why You Need This

This tier is for platforms where the consequences of a security incident are existential or industry-shaking: regulated industries (finance, healthcare, legal, defence-adjacent); multi-million-customer SaaS where breach means mass GDPR notification; B2B platforms whose enterprise customers are themselves regulated; public sector contracts requiring deep security validation; or pre-IPO / pre-Series-B security due diligence.

Who Requires This From You

  • ISO/IEC 27001:2022 Annex A.8.29 + A.8.8 — Full enterprise audit evidence
  • SOC 2 Trust Services Criteria — CC4.1, CC6.1, CC7.1, CC7.2, A1.2
  • DORA Article 25 — Threat-Led Penetration Testing (TLPT) for in-scope financial entities
  • NIS2 Directive Article 21 — Risk management measures for essential and important entities
  • PCI DSS 4.0 Requirement 11.4 — For payment processing platforms
  • Multinational enterprise vendor security reviews with deep technical scrutiny

What You Get

All Tier 3 scope plus Cloud infrastructure

  • AWS / GCP / Azure surface assessment
  • Publicly exposed services inventory
  • IAM misconfigurations
  • Storage permissions (S3, Blob, Cloud Storage)
  • Network segmentation testing
  • Secrets exposure in repositories and infrastructure

Asynchronous, webhook, and integration security

  • Message queue security (RabbitMQ, SQS, Pub/Sub)
  • Worker/cron job authorisation
  • Webhook authentication and replay attacks
  • Third-party API integration security
  • Service-to-service authentication

SSO/OAuth deep-dive & custom exploitation

  • OAuth 2.0 / OIDC implementation review
  • SAML SSO security
  • Identity provider integration
  • Trust boundary verification
  • Custom PoC scripts for complex business logic flaws

Enhanced deliverables (two-tester team)

  • Full enterprise-grade pen test report (typically 50–100 pages)
  • Multi-stakeholder findings presentation (1-hour call)
  • Auditor handover session (90 minutes)
  • Multi-round follow-up with end-customer security teams
  • Quarterly briefing for the following 12 months (included)
  • Independent peer review by QA Reviewer

What Happens If You Don't

Critical security incident with existential consequences for regulated platform
DORA Article 25 non-compliance for in-scope financial entities
NIS2 Article 21 risk management evidence gap
Enterprise vendor review failure — loss of major contract
Pre-IPO / Series-B security due diligence failure
Cyber insurance decline or maximum premium rate-up

Our Process

1
Scoping call (90 minutes)
Confirm full scope: web app, APIs, cloud, integrations, SSO, test accounts, blackout periods.
2
Full pre-engagement documentation
NDA, Statement of Work, Rules of Engagement, DPA, IP whitelisting for entire tester team.
3
Test environment access provisioned
Cloud credentials, multiple test accounts across all roles and tenants, webhook test endpoints.
4
Active testing (15–22 person-days over 3–4 weeks)
Two-tester team. Daily updates via secure channel. Critical findings escalated within 4 hours.
5
Report, presentation, and handover
Enterprise report + multi-stakeholder presentation + 90-min auditor handover session.
6
Remediation retest + quarterly briefing
Delta report on remediations + 12 months of quarterly briefings included.

Is This the Right Penetration Test for You?

You should choose this tier if…

  • You have Series-A+ SaaS with cloud infrastructure, integrations, and async processing
  • You're in fintech, healthtech, or another regulated industry where breach consequences are existential
  • You need DORA Article 25 (TLPT) threat-led penetration testing evidence
  • You require a two-tester team with independent QA review
  • You need auditor handover session included (90 minutes)
  • You're preparing for pre-IPO or Series-B security due diligence

Common scenarios

Series-B fintech CISO

"We process payments in 12 countries. We need deep testing of our cloud infrastructure, integrations, and API surface with an independent peer-reviewed report."

HealthTech platform pre-NHS DTAC

"We handle special category data. Our NHS trust partner requires evidence of thorough enterprise-level security testing before go-live."

Pre-IPO SaaS

"Our underwriters and investors want to see a comprehensive, peer-reviewed penetration test report as part of security due diligence."

EU financial entity preparing for DORA

"DORA Article 25 requires TLPT. We need the technical execution component from a qualified security firm."

What buyers search for that leads here

Buyers who reach this page typically searched: "enterprise SaaS penetration testing", "cloud security audit", "DORA TLPT", "pre-IPO security audit", "fintech penetration test", or "enterprise application security testing".

Our €8,000–€12,000 Enterprise Pentest delivers maximum scope: web application, REST APIs, cloud infrastructure (AWS/GCP/Azure), asynchronous processing paths, webhook security, SSO/OAuth deep-dive, and custom exploitation development. Delivered by a two-tester team with independent QA review.

Big-4 consultancies charge £20,000–40,000+ for equivalent scope. UK mid-size CREST firms charge £12,000–18,000. Our enterprise tier at €8,000–€12,000 provides 55–70% cost saving at equivalent technical depth.

When to choose a different tier instead

SignalRecommended service
Multi-tenant SaaS without cloud scopeStandard Pentest (€4,500)
AI/LLM application security testingAI Red Team ($990)
Ongoing compliance management post-pentestCompliance-as-a-Service (€729/mo)
Cyber insurance evidence packageCyber Insurance Readiness (€2,500)

Frequently asked questions about this tier

What does 'two-tester team' mean in practice?

The Lead Penetration Tester drives primary test execution. The Senior Consultant provides specialist depth on specific areas (cloud, APIs, OAuth). The QA Reviewer independently reviews all findings for severity calibration before the report is finalised. This three-layer structure significantly reduces missed findings and severity miscalibration.

Does this satisfy DORA Article 25 (TLPT)?

DORA Article 25 mandates Threat-Led Penetration Testing for in-scope significant financial entities. Our Enterprise tier covers the technical execution component. Full TLPT compliance also requires a Threat Intelligence provider and specific documentation formats. We can coordinate with your TI provider.

What cloud providers are covered?

AWS, Google Cloud Platform (GCP), and Microsoft Azure are covered in the standard scope. Multi-cloud environments are covered within the standard engagement price.

Is this suitable for pre-IPO security due diligence?

Yes. Pre-IPO due diligence typically requires broad scope, independent peer-reviewed report, formal Attestation Letter, and evidence of methodology alignment (OWASP, PTES, NIST). We can structure deliverables specifically for due diligence evidence files on request.

Are quarterly briefings really included?

Yes. 12 months of quarterly security briefings are included at no additional charge. These cover any newly discovered vulnerabilities relevant to your tech stack and methodology updates.

Pricing & Delivery

from€8,000
4–5 weeks

From €8,000 for enterprise SaaS without specialist add-ons. Up to €12,000 for highly complex platforms (multiple cloud providers, extensive integrations, multiple distinct user types). Add-on modules: OWASP LLM Top 10 (+€2,000–3,000), mobile app (+€3,500–5,500), source code review (+€3,500–6,000), threat modelling workshop (+€1,500–2,500), tabletop IR exercise (+€2,500–4,000).

PayPal · SSL Senior only 14-day warranty SEC-PENT-04

Frequently Asked Questions

What does "two-tester team" mean in practice?

The Lead Penetration Tester drives primary test execution. The Senior Consultant provides specialist depth on specific areas (cloud, APIs, OAuth). The QA Reviewer independently reviews all findings for severity calibration and false positive elimination before the report is finalised. This three-layer structure significantly reduces the risk of missed findings and severity miscalibration.

Does this satisfy DORA Article 25 (TLPT)?

DORA Article 25 mandates Threat-Led Penetration Testing (TLPT) for in-scope significant financial entities. Our Enterprise tier covers the technical execution component. Full TLPT compliance also requires a Threat Intelligence (TI) provider and specific documentation formats. We can coordinate with your TI provider. For smaller financial entities not in the TLPT scope, our Tier 3 Standard is typically sufficient.

Can you work under our enterprise NDA template?

Yes, in most cases. We review enterprise NDA templates under English law. EU/UK DPAs (including Standard Contractual Clauses) are available. For non-standard jurisdiction requirements, we'll flag this during the scoping call.

What cloud providers are covered?

AWS, Google Cloud Platform (GCP), and Microsoft Azure are covered in the standard Enterprise tier scope. Multi-cloud environments are covered within the standard engagement price. Dedicated cloud security review (without web/API component) is available as a separate engagement.

Is this suitable for pre-IPO security due diligence?

Yes. Pre-IPO due diligence security reviews typically require exactly what this tier delivers: broad scope, independent peer-reviewed report, formal Attestation Letter, evidence of methodology alignment with recognised standards (OWASP, PTES, NIST), and auditor handover capability. We can structure deliverables specifically for due diligence evidence files on request.