Zero Trust is a cybersecurity approach in which no user, device, or action is trusted by default—everything must be verified before access is allowed. The Zero Trust model operates on the principle of "never trust, always verify," eliminating the concept of a trusted internal network perimeter.
Traditional security models assumed that everything inside a network perimeter was safe. Zero Trust recognizes that threats can exist both outside and inside traditional network boundaries, and that perimeter-based defenses are insufficient in a world of cloud computing, remote work, and mobile devices.
Core principles of Zero Trust security
Verify Explicitly: Always authenticate and authorize based on all available data points including user identity, location, device health, service or workload, data classification, and anomalies.
Use Least Privilege Access: Limit user access with just-in-time and just-enough-access, risk-based adaptive policies, and data protection to minimize lateral movement and reduce attack surfaces.
Assume Breach: Minimize blast radius for breaches, segment access, verify end-to-end encryption, and use analytics to gain visibility, drive threat detection, and improve defenses.
Key components of a Zero Trust architecture include
Strong identity verification and multi-factor authentication (MFA)
Device health validation before granting access
Micro-segmentation of networks to limit lateral movement
Continuous monitoring and validation of user and device behavior
Least-privilege access controls
Comprehensive logging and analytics
Zero Trust has become a foundational framework recommended by government agencies including NIST and CISA. Pangratis supports Zero Trust principles by providing continuous analysis of email communications and detecting account compromises or anomalous behavior that could indicate identity-based attacks.