B2B SaaS security — the 2026 buyer-facing baseline
Selling SaaS to B2B buyers means passing their security review. The review asks ~150 standardized questions covering auth, data, process, and increasingly AI transparency. Miss the baseline and the deal stalls.
Top security risks
Multi-tenant data isolation failure
The most damaging failure mode for any B2B SaaS. One tenant reading another tenant's data kills trust permanently.
SSO not available for enterprise
Enterprise buyers expect SSO. Not offering it blocks deals above ~$10K ARR.
Missing SOC 2 in year two
You can sell without it in year one; you cannot in year two.
AIBOM missing
EU customers in 2026 will ask. Ship it proactively.
Regulatory context
SOC 2 Type 2 (US primary), ISO 27001 (EU/global), GDPR (EU users), CCPA (California users), increasingly EU AI Act for products with AI features.
Checklist
- SOC 2 Type 1 before first enterprise deal
- SSO offered on enterprise tier
- Multi-tenant isolation verified on every PR (Securie + architecture review)
- DPA template ready for signature
- Sub-processor list published
- Incident response + breach-notification playbook tested
- AIBOM published if you use AI features
Enterprise buyers close faster when your Trust page links to SOC 2, ISO 27001, AIBOM, and a transparency report — in that order.