ISO 27001 is the global baseline for healthcare information security. European, Canadian, and APAC hospital systems often require it instead of (or in addition to) HIPAA.
NHS England (UK) and EU healthcare systems require ISO 27001 from vendors
ISO 27799 (health informatics specialization) builds on ISO 27001 with healthcare-specific guidance
Annex A.8.15 logging requirements apply directly to ePHI / patient data access
Annual surveillance audits create continuous accountability
ISO 27001 is the international standard for information security management systems (ISMS). The 2022 revision reorganized controls into four themes: Organizational, People, Physical, and Technological. Audit logging falls primarily under Annex A control A.8.15 (Logging) and A.8.16 (Monitoring activities). Organizations must produce logs, protect them from tampering, and review them regularly. ISO 27001 certification is recognized globally and increasingly required for cross-border business.
Retention requirement: Organization-defined, typically 1-3 years (must align with risk assessment)
All patient record access
All clinical workflow events
All third-party integration events
All security event detection
All change management events
Produce, store, protect, and analyze logs that record activities, exceptions, faults, and information security events. Logging facilities and log information must be protected against tampering and unauthorized access.
AuditKit: Immutable hash chain logging with cryptographic tamper detection
Networks, systems, and applications must be monitored for anomalous behavior. Appropriate actions must be taken to evaluate potential security incidents.
AuditKit: SIEM streaming enables real-time anomaly detection and alerting
Processes for acquisition, use, management, and exit from cloud services must include logging and monitoring requirements.
AuditKit: Multi-tenant isolation ensures cloud audit data is properly segregated
Information stored in systems and devices must be deleted when no longer required. Deletion events must be logged.
AuditKit: Structured event logging captures data lifecycle events including deletion with full context
SHA-256 hash chains and Merkle tree proofs provide mathematical proof that audit records have not been altered. This is increasingly the standard mechanism for satisfying ISO 27001 log-integrity requirements — assessors no longer accept policy-only controls.
Healthcare SaaS platforms typically serve multiple customers from shared infrastructure. AuditKit enforces strict tenant isolation at the infrastructure level — your customers' audit data is logically separated, satisfying data segregation requirements common in ISO 27001 assessments.
Stream audit events to Splunk, Datadog, Elastic, or any SIEM your security team uses. ISO 27001 increasingly requires real-time monitoring, not just retained logs — AuditKit ships native streaming with at-least-once delivery semantics.
The AuditKit React viewer gives ISO 27001 auditors a clear interface for evidence review — filtered queries, integrity verification UI, and exportable evidence packages. Cuts auditor request cycles by 60-80% in typical engagements.
ISO 27001:2022 contains 93 controls organized into 4 themes (reduced from 114 in the 2013 version)
Control A.8.15 explicitly requires protection of logs against tampering
Certification requires annual surveillance audits and recertification every 3 years
Over 70,000 organizations worldwide hold ISO 27001 certification
If you sell only in the US, HIPAA + SOC 2 is sufficient. If you sell internationally (UK, EU, Canada, APAC), ISO 27001 is increasingly required. Many healthcare SaaS companies pursue all three with a unified audit logging foundation.
ISO 27001 Annex A control A.8.15 requires organizations to produce, store, protect, and analyze logs recording activities, exceptions, faults, and security events. Logs must be protected from tampering and unauthorized access. AuditKit provides cryptographic tamper protection through SHA-256 hash chains and Merkle tree proofs.
HIPAA Security Rule 164.312(b) requires audit controls that record and examine activity in systems containing ePHI. This includes logging all access to patient records, authentication events, data modifications, and administrative actions. Logs must be retained for 6 years and protected from tampering. AuditKit satisfies these requirements with SHA-256 hash chains and configurable retention policies.
ISO 27001 certification is increasingly required by European banks and financial institutions before vendor onboarding. The 2022 revision (ISO 27001:2022) makes logging requirements more prescriptive than SOC 2.
HIPAA audit logging is the operational core of healthcare SaaS compliance. Without provable ePHI access trails, you cannot be a Business Associate, you cannot pass an OCR audit, and you cannot sell to hospitals or payers.
Healthcare buyers increasingly require SOC 2 Type II in addition to HIPAA. The frameworks complement each other: HIPAA defines the regulatory baseline; SOC 2 demonstrates operational effectiveness to enterprise buyers.
GDPR Article 9 designates health data as a "special category" requiring elevated protection. Healthcare SaaS serving any EU patient data must demonstrate audit logging at a higher bar than ordinary personal data.
Universities, especially in Europe and the UK, require ISO 27001 from edtech vendors handling student data. Cyber Essentials Plus (UK) and ISO 27018 (cloud privacy) often layer on top.
Tamper-proof audit trails that satisfy ISO 27001 requirements out of the box. Start from $99/mo.