Microsoft Entra ID Penetration Testing
Entra ID is the front door to everything Microsoft in your estate. The findings that matter are rarely exotic: a conditional access policy with an exclusion group nobody reviews, and a service principal with more graph permission than any human. CREST-certified testers, fixed price from £3,540, scoped in 24 hours.
- Unlimited retesting
- No rescheduling or cancellation fees
- Fixed quote within 24 hours
“I would highly recommend EJN Labs to any organisation seeking reliable, detailed, and well-managed penetration testing services, particularly for government or enterprise-level projects.”
Imran SaghirProject Lead, SquareOne“There wasn’t another company we could find that could deliver what we needed in the timeframe we needed. The client loved it, and we got instant ROI from the engagement.”
Dan WilcocksonCo-Founder, CelloriCompromise one Entra ID account with the right role and you have Exchange, SharePoint, Teams, the Azure subscription and whatever else is federated behind it. That makes the tenant configuration more consequential than most of the applications it protects.
Why Entra ID is the highest-value target you own
Conditional access is where we concentrate, because it is almost always nearly right. There is a policy requiring multi-factor authentication, and an exclusion group holding the service accounts, the break-glass account and four people who complained. The exclusion is the finding.
The other half is applications. Consent grants accumulate, service principals outlive the projects that created them, and a single over-permissioned enterprise application can read every mailbox in the tenant without touching a password.
ISO 27001, SOC 2, PCI DSS and Cyber Essentials Plus audits accept manual penetration test evidence. Scan-only evidence is generally insufficient.
CONDITIONAL ACCESS, CONSENT + ROLES
What we actually pen test on an Entra ID tenant
Manual pen testing across conditional access coverage, legacy authentication, application consent and service principals, privileged roles and the B2C flows where you run them.
Conditional access coverage
Every policy evaluated together rather than individually, looking for users, applications and platforms that fall outside all of them, exclusion groups and their membership, report-only policies never enabled, and whether the gaps are reachable from outside.
Legacy authentication and protocols
Whether legacy authentication is genuinely blocked, basic authentication endpoints, and older protocols that bypass conditional access entirely.
Application consent and service principals
Enterprise applications and their granted Graph permissions, user consent settings, service principals with credentials that never expire, and which of them could read mail, files or directory data across the tenant.
Privileged roles and PIM
Standing assignment of privileged roles, whether Privileged Identity Management is used and enforced, break-glass account protection, and what a Global Reader or Application Administrator can escalate to.
B2C and external identity
Where you run Entra External ID or B2C, the user flows and custom policies, self-service signup abuse, attribute manipulation and whether external users can reach internal resources through guest access.
Device and hybrid join
Device registration and join settings, whether a rogue device can register, hybrid identity synchronisation, and what the on-premises connector account can do in the cloud.
METHODOLOGY
Microsoft Entra ID Penetration Testing: From Scope to Attestation
CREST-aligned methodology built on OWASP Web Security Testing Guide, OWASP ASVS, NIST SP 800-115, and PTES. Each finding maps to all four standards plus your specific compliance regime.
Reconnaissance
Application mapping, technology fingerprinting, content discovery, parameter enumeration, authentication-flow analysis, role-matrix construction.
Vulnerability Assessment
Authenticated and unauthenticated automated scanning across every user role, plus targeted manual checks for known weakness patterns.
Manual Exploitation
Hands-on testing by a CREST-certified pentester. Business-logic exploitation, chained vulnerabilities, privilege escalation, impact validation.
Reporting + Retest
Executive summary, technical report with CVSS scores and reproduction steps, walkthrough call, free retest after remediation, attestation letter.
CREDENTIALS
Verified Accreditations Auditors Accept
Every credential below is independently verifiable. UK procurement teams, FCA supervisors, ISO 27001 / SOC 2 auditors, and cyber insurance underwriters all recognise these standards.
GET YOUR QUOTE
Get a CREST Entra ID pen test quote in 24 hours
A fixed-price quote back in one business day, from a named CREST assessor. No sales pipeline, no chasing.
- CREST and IASME accredited. Testing your auditors and clients already recognise.
- Fast-track testing within 24 hours where required. Free retest of every fix included.
- Live findings via your client portal, not a four-week PDF.
- Fixed price from £3,500 for a single-role, single-app scope, agreed up front. Most engagements run £5,000 and up. No day-rate surprises.
Dan WilcocksonCo-Founder, CelloriUnder NDA Further named references available on a scoping call.
- We reply within one business day with a fixed-price quote from a named CREST assessor.
- You approve the scope and we book a start date, usually within 24 hours.
- Live findings land in your client portal as we test, with a free retest of every fix.
Get your fixed pen test quote in 24 hours
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COMPLIANCE READY
Reports Mapped to Every Framework
Findings are explicitly tagged to the relevant control reference. Your audit team submits the report directly without translation work.
ISO 27001:2022
Annex A.8.8 management of technical vulnerabilities plus A.5.15-5.18 and A.8.2-8.5 access control validation.
SOC 2 Type I & II
CC6 logical access, CC7 system operations, CC8 change management evidence.
PCI DSS
Requirement 11.4 application penetration testing across cardholder data environments, including ecommerce penetration testing for online retail platforms.
FCA SYSC
SYSC 4.1.1R, 6.1.1R, 13 mapped to each finding for FCA-regulated firms.
UK GDPR
Article 32 effectiveness testing, customer-data security controls, ICO-acceptable evidence.
Cyber Essentials Plus
Direct certification through our IASME body status, single-vendor delivery.
PRICING
Transparent Microsoft Entra ID Penetration Testing Pricing
Pricing depends on app complexity, user-role count, business-logic depth, and integration surface. The day count flexes; the included deliverables stay the same across all engagements.
3 to 4 testing days
Single user role, basic CRUD application, marketing website with auth. Around 5 working days from kickoff to report.
Get a fixed quote4 to 6 testing days
Multi-role SaaS, business application with payment integration. Around 8 to 12 working days from kickoff to report.
Get a fixed quote6 to 8 testing days
Multi-tenant platform, complex authorisation matrix, integration-heavy applications. Around 15 to 20 working days from kickoff to report.
Get a fixed quotePart of Technologies We Pen Test. These are examples of the stacks we publish pages for, not a complete list. If yours is not here we still test it. Related pages:
BY SECTOR
Microsoft Entra ID Penetration Testing for Your Sector
Sector-specialist scoping for UK businesses with sector-specific compliance regimes and threat models.
Fintech & FCA-Regulated
FCA SYSC, Open Banking FAPI 1.0, PSD2 SCA, payment-flow scrutiny, KYC/AML testing.
Fintech sector pageSaaS Companies
SOC 2 Type I & II evidence, multi-tenant boundaries, role escalation, customer-tenant isolation.
SaaS sector pageLaw Firms
SRA Cyber Standard, privileged data, conveyancing fraud defence, partner-tier procurement.
Law firm sector pageHealthcare
NHS DTAC, DSP Toolkit v6, UK GDPR Article 32, EHR systems, telehealth platforms.
Healthcare sector pageInsurance
FCA / PRA Operational Resilience, cyber underwriting, claims data, broker portals.
Insurance sector pagePublic Sector
CCS / G-Cloud framework, NCSC-aligned, citizen-facing services, PSN-compliance scrutiny.
Public sector pageWHY EJN LABS
What You Get From Microsoft Entra ID Penetration Testing
Six concrete differentiators competitors don’t all match.
CREST-Certified Testers, Verifiable
Every test by a CREST-certified pen tester (CRT, CCT APP, CCT INF where applicable). Verify our company status at crest-approved.org.
24-Hour Startup, Where Required
From signed scope to active testing in a single business day for incident response, audit deadlines, or regulator-driven timelines.
Live Findings, Not 4-Week PDFs
Critical issues reported during testing through your client portal. Your team remediates while testing continues.
Audit-Ready Reports
Executive summary plus full technical report with CVSS scores and explicit framework mappings (ISO 27001, SOC 2, PCI DSS, FCA SYSC).
Free Retests, Standard
Verify remediation of every finding before close-out. Letter of attestation for audit submission included. Most competitors charge £1,500-£3,000 per retest.
UK-Based CREST Testers
Every engagement performed by vetted, UK-based CREST-certified testers, matched to your needs, security clearance, and compliance scope.
FAQ
Frequently Asked
Is this the same as your Microsoft 365 security review?
They overlap and complement. The Microsoft 365 review covers the tenant workloads: mailbox rules, external sharing, Defender policy. This one goes deep on identity: conditional access, consent, service principals and privileged roles. Many clients scope both.
Do you need a Global Administrator account?
No, and we would rather not have one. A Global Reader plus a couple of standard user accounts covers the review, and anything needing more we ask for specifically and in writing.
Will you trigger security alerts?
Some, deliberately, and that is useful. We agree a testing window with you and keep a log of what we did and when, so your SOC can correlate. If nothing alerts at all, that is itself a finding.
Can you test our Azure subscription too?
Yes, as a separate but related scope. Entra ID is the identity layer and Azure is the resource layer, and the interesting escalations run between the two. We can price them together.
What does the report cover for auditors?
Findings mapped to ISO 27001, SOC 2 and Cyber Essentials where relevant, written so an auditor can use them, plus a separate technical write-up with reproduction steps for whoever administers the tenant.
20+ CREST-accredited testing services in one place
Web, mobile, API, cloud, AI, infrastructure, red team. Pick the test that fits your environment.
Get a fixed price for your Entra ID tenant
Tell us roughly how many users, enterprise applications and conditional access policies you run, and whether B2C is in scope. Fixed-price quote from a named CREST assessor within one business day.
