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Risk R-010 - Personal Data Leakage from Identity Directory

FieldValue
Risk IDR-010
AssetIdentity Platform / LDAP (Information – Owner: Sec)
ScenarioS-009 - Personal data leakage
Likelihood🟧 Medium - lateral movement or misconfigured access may expose personal data
Impact🟥 High - exposure of PII leads to GDPR violations, reputational damage, and legal consequences
Risk Level🟥 High
OwnerSec
Last Review2026-03-08
Next Review2026-09-08

Associated Controls:

  • Encrypt PII at rest and in transit (LDAPS, disk-level encryption).
  • Enforce RBAC for all LDAP accounts; restrict access to privileged identities.
  • Enable audit logging; forward events to central SIEM for monitoring.
  • Conduct regular access reviews and data protection impact assessments (DPIA).
  • Apply network segmentation and least-privilege principles.

References:

  • ISO 27001 - Control 5.1 Policies for information security.
  • ISO 27001 - Control 8.2 Privileged access rights.
  • ISO 27001 - Control 8.3 Information access restriction.
  • NIST CSF - PR.AC Identity Management, Authentication and Access Control.
  • NIST CSF - PR.DS Data Security.
  • NIST CSF - DE.CM Continuous Monitoring.
  • GDPR - Art. 5 Principles relating to processing of personal data.
  • GDPR - Art. 32 Security of processing.
  • GDPR - Art. 33 Notification of a personal data breach to the supervisory authority.
  • GDPR - Art. 34 Communication of a personal data breach to the data subject.
  • EBIOS RM - Analysis of risks related to leakage of personal data and identity information.

Response Actions:

  • Containment - Isolate the affected LDAP host, revoke compromised credentials.
  • Investigation - Analyze audit logs to determine scope of data exposure.
  • Notification - Trigger GDPR breach notification to supervisory authority within 72h, inform affected data subjects if high risk.
  • Remediation - Rotate credentials, enforce MFA, review ACLs, and update security policies.