How do ESPs handle sensitive data storage?

ESPs handle significant volumes of personal data: email addresses, names, behavioral data, and potentially sensitive attributes. Responsible handling requires multiple protection layers.

Encryption:

Data encrypted at rest using strong algorithms (AES-256)

Key management with rotation and access controls

TLS for all data in transit

Encrypted backups

Access controls:

Role-based access (employees see only what their job requires)

Authentication requirements for all access

Audit logging of data access

Regular access reviews and revocation

Infrastructure security:

Network segmentation isolating sensitive systems

Intrusion detection and prevention

Regular security assessments and penetration testing

Vulnerability management and patching

Compliance frameworks:

SOC 2: Security, availability, processing integrity controls

ISO 27001: Information security management

GDPR: EU data protection requirements

HIPAA: Healthcare data handling (for applicable ESPs)

Data minimization:

Collect only necessary data

Retention policies to delete old data

Anonymization where full data isn't needed

Ask your ESP about their certifications and security practices. Reputable providers publish security documentation and undergo regular audits.