AI Voice Agent Security: Encryption, Compliance, and Data Protection
How AI voice agent platforms handle security, HIPAA compliance, PCI-DSS, SOC 2, and data protection. A guide for compliance-conscious businesses.
Security Is Not Optional for AI Voice Agents
AI voice agents handle sensitive data: names, phone numbers, account information, payment details, and in healthcare settings, protected health information (PHI). Security failures in voice AI systems can lead to data breaches, regulatory fines, and destroyed customer trust.
CallSphere Security Architecture
CallSphere implements defense-in-depth security across every layer:
Encryption
- In transit: All data encrypted with TLS 1.3 — voice audio, API calls, and webhook payloads
- At rest: AES-256 encryption for stored data including call recordings and transcripts
- Key management: HSM-backed key management with automatic rotation
Access Controls
- Role-based access (RBAC): Granular permissions for admin, agent, viewer, and custom roles
- Multi-factor authentication: Required for all admin accounts
- API key scoping: Restricted API keys with minimal required permissions
- Session management: Automatic timeout, single-session enforcement
Audit Logging
- Every API call, configuration change, and data access is logged
- Logs are immutable and retained for 7 years (configurable)
- Real-time alerting for suspicious activity
HIPAA Compliance
For healthcare organizations, CallSphere provides:
- Signed Business Associate Agreement (BAA)
- PHI encrypted at rest and in transit
- Minimum necessary data access policies
- Breach notification procedures
- Annual risk assessments
SOC 2 Alignment
CallSphere's infrastructure aligns with SOC 2 Trust Service Criteria:
- Security: Protection against unauthorized access
- Availability: 99.95% uptime SLA
- Processing Integrity: Accurate, complete data processing
- Confidentiality: Protection of confidential information
- Privacy: Personal information handled per privacy commitments
PCI-DSS for Payment Processing
When processing payments, CallSphere:
- Tokenizes card data via Stripe — no card numbers touch CallSphere servers
- Uses DTMF or secure voice capture for card input
- Meets PCI-DSS Level 1 requirements through Stripe integration
FAQ
Is CallSphere HIPAA compliant?
Yes. CallSphere offers full HIPAA compliance with a signed BAA on all plans. PHI is encrypted, access is controlled, and audit logs are maintained.
Where is data stored?
CallSphere data is stored in SOC 2 certified data centers in the United States, with optional data residency for international deployments.
Can I get a SOC 2 report?
Contact our security team for CallSphere's SOC 2 Type II report and security documentation.
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