What Notion security features protect sensitive business information?

Notion implements multiple security layers to protect sensitive business information, combining infrastructure safeguards, encryption standards, and enterprise-grade controls. The platform uses AES-256 encryption for data at rest and TLS 1.2+ for data in transit, while maintaining compliance with SOC 2 Type 2, ISO 27001, HIPAA, and GDPR requirements ^[1][3]. Enterprise plans offer advanced features like single sign-on (SSO), audit logs, and granular permission management to prevent unauthorized access ^[2][5]. However, critical limitations exist: Notion lacks end-to-end encryption, and security effectiveness depends heavily on proper user configuration and access management ^[4][7][9].

• Core protections: AES-256 encryption, TLS 1.2+, and SOC 2/ISO 27001 compliance form the foundation of Notion's security framework ^[1][3]
• Enterprise controls: SSO, audit logs, and domain management enable centralized security oversight for business users ^[2][5]
• Key vulnerabilities: Absence of end-to-end encryption and risks from misconfigured permissions or third-party integrations ^[4][7][8]
• Compliance readiness: HIPAA and GDPR support makes Notion viable for regulated industries when properly configured ^[1][3]

Notion's Security Framework for Business Data

Infrastructure and Encryption Protections

Notion's security architecture relies on AWS infrastructure with built-in DDoS protection and separate production environments to isolate customer data ^[1]. The platform implements AES-256 encryption for data at rest and TLS 1.2+ for data in transit, meeting industry standards for data protection ^[1][3][5]. Daily encrypted backups and customer-controlled data erasure options provide additional safeguards against data loss or unauthorized retention ^[1].

Key infrastructure security measures include:

• Hosting environment: AWS infrastructure with 99.9% uptime guarantee and real-time status monitoring ^[3]
• Encryption standards: AES-256 for stored data and TLS 1.2+ for data transmission ^[1][5]
• Backup systems: Daily encrypted backups with customer-controlled deletion capabilities ^[1]
• Network protections: Firewalls, intrusion detection systems, and secure wireless network configurations ^[1]

While these measures provide strong foundational security, experts note that Notion's lack of end-to-end encryption means the company technically maintains access to user data during processing ^[4][7]. This architectural choice distinguishes Notion from platforms like Proton Drive that offer zero-knowledge encryption models ^[4].

Enterprise-Grade Access Controls and Compliance

Notion's Enterprise plan introduces advanced security features specifically designed for business environments. Workspace owners gain granular control through security settings that can disable public sharing, guest access, and content export entirely ^[2]. Single sign-on (SSO) integration with identity providers like Okta or Azure AD enables centralized authentication management, while audit logs track all user activities and permission changes ^[2][5].

Critical enterprise security features include:

• Permission management: Domain-level controls and page-specific permissions to restrict data access ^[2]
• Security integrations: SIEM tools (Splunk, Datadog) and DLP solutions (Nightfall AI) for real-time threat monitoring ^[2]
• Compliance certifications: SOC 2 Type 2, SOC 3, ISO 27001, and HIPAA readiness for healthcare data ^[2][3]
• Data ownership: Explicit company ownership of all workspace content to meet regulatory requirements ^[2]

The platform's compliance with global standards makes it suitable for regulated industries, though security experts emphasize that proper configuration is essential. Common vulnerabilities stem from user errors like excessive permission grants or failure to enable two-factor authentication rather than platform deficiencies ^[6][8]. Notion's security documentation provides detailed guidance on implementing these controls, including step-by-step instructions for configuring security settings and reviewing access permissions ^[6][8].