CREST vs ISO 27001 vs SOC 2: Which Assurance Does Your Board & Auditor Actually Want?
We’ve been on both sides — buyer and tester. Here’s what actually matters.
Hook: 68% of enterprises overpay for the wrong assurance — buying an ISO 27001 cert when the auditor asked for a CREST pen-test, or vice versa. Here’s how to choose right, first time.
At a Glance
| Assurance | Proves | Audience | Frequency |
|---|---|---|---|
| CREST Pen-Test | Can we be breached? Real exploitability & impact | Board, CISO, Customers, QSA | Annual / per release |
| ISO 27001:2022 | Do we manage security systematically? ISMS certified | Regulators, Enterprise buyers | 3-year cycle + surveillance |
| SOC 2 Type II | Do controls operate over time? Trust Services Criteria | US SaaS buyers, Investors | Annual |
They are complementary, not interchangeable. A SaaS needs all three — but in sequence.
Decision Flow (2 Minutes)
- Selling to US Enterprise / Raising Series B+? → SOC 2 (they’ll ask for it) + CREST pen-test as evidence for CC6.1/CC7.2
- Need international credibility / RFP in EMEA/APAC? → ISO 27001 + CREST (CREST proves the technical controls ISO claims)
- PCI DSS handling card data? → PCI DSS + CREST pen-test (PCI DSS 11.3 mandates methodology-aligned pen-testing)
- Just need to prove you’re not breachable? → Start with CREST VAPT — fastest board win (10 days) and feeds ISO/SOC 2 evidence.
Common Trap: “We Have ISO, So We Don’t Need Pen-Test”
ISO 27001 Annex A 8.29 says test your controls. Auditors increasingly reject ISO without independent, CREST-style pen-test evidence. Result: major non-conformity at Stage 2.
How Snipeyes Bundles for Efficiency
One scoping workshop → One evidence set → Three outcomes: CREST report + ISO 27001 Annex A / SOC 2 CC mapping + PCI DSS 11.3 attestation. Retest included to close findings before the auditor arrives.
Hook: Get our Free Compliance Mapper — One Control, Three Reports (ISO/SOC2/PCI) Excel Template — save 40 hours of mapping.
CTA: Request Bundle Proposal — Clear Scope for All Three → · See Sample: How One Report Maps to 3 Frameworks →
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