Dynamics 365 Penetration Testing
Dynamics holds your customer data behind a security model of roles, business units and teams that almost nobody fully understands. We answer the only question that matters: who can actually read what. CREST-certified testers, fixed price from £3,920, 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, CelloriThe Dynamics security model is genuinely powerful and genuinely difficult. Privileges are granted at user, business unit, parent-child and organisation scope, then combined across every role a user holds, and the effective permission is the union. Nobody reasons about the union correctly for long.
Why Dynamics is an access control problem
What we do is stop reasoning and start testing. Given an account in each role, we enumerate what it can actually read, write, share and export through the application, the Dataverse Web API and the OData endpoints, which frequently differ from what the role designer intended.
The Power Platform layer then widens it. Flows and connectors run with a connection owned by someone, often someone with far more access than the user triggering the flow, and Power Pages portals expose a subset of Dataverse to the internet.
ISO 27001, SOC 2, PCI DSS and Cyber Essentials Plus audits accept manual penetration test evidence. Scan-only evidence is generally insufficient.
ROLES, DATAVERSE + CONNECTORS
What we actually pen test on a Dynamics 365 environment
Manual pen testing across security roles and business units, Dataverse access, Power Platform connectors and flows, portal exposure and custom plugin code.
Security roles and business units
Effective permission per role tested rather than read, privilege depth across user, business unit and organisation scope, team and access team membership, and the union of permissions for users holding several roles.
Dataverse and API access
Web API and OData endpoints tested against each role, whether record-level sharing holds, field level security enforcement, and whether a user can retrieve through the API what the interface hides.
Power Platform connectors and flows
Connection ownership and privilege, whether a flow runs with more access than its trigger user, data loss prevention policy coverage, and custom connector authentication.
Power Pages and portal exposure
Where a portal is in use, anonymous and authenticated web roles, table permissions, whether portal users can reach records outside their contact or account, and form and list configuration.
Plugins and custom code
Registered plugins, custom workflow activities and their execution context, whether any run in an elevated context with user-controlled input, and injection in custom code.
Integrations and data export
Dual-write and integration accounts and their privilege, export to Excel and report access, audit configuration, and what a compromised integration account could extract.
METHODOLOGY
Dynamics 365 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 Dynamics 365 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
Quote request received
We will reply within one business day with your fixed-price quote from a named CREST assessor.
Your data stays with us. No newsletter signup.
or book a 20-min scoping call first
We reply within one business day. Your data stays with us. No newsletter signup.
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 Dynamics 365 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
Dynamics 365 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 Dynamics 365 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 allowed under Microsoft’s rules?
Yes. Microsoft permits penetration testing of your own Dynamics 365 and Power Platform tenants within its published engagement rules, and we work inside them. We test your configuration and customisations, not Microsoft’s infrastructure.
How many accounts do you need?
One per security role you care about, ideally including a portal user and an account in a different business unit. The test is about boundaries, so we need accounts on both sides of each boundary.
Will you modify our data?
We work read-only against production by default. Where write testing is needed we use a sandbox environment or records you designate, and anything we create is documented and removed.
Does this cover Power Apps?
Canvas and model-driven apps built on the same Dataverse are in scope, because they share the security model. Standalone canvas apps with their own connectors can be included if you want them.
What do we receive?
A report mapped to ISO 27001, SOC 2 and GDPR where personal data is in scope, a technical write-up with reproduction steps, and unlimited free retesting.
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 Dynamics environment
Tell us which modules you run, roughly how many security roles, and whether a portal or Power Platform flows are in scope. Fixed-price quote within one business day.
