What is a Zero Trust security model?
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Quick Answer
Zero Trust assumes no user, device, or network is trusted by default — every access request is authenticated, authorized, and encrypted based on identity and context, regardless of network location.
Detailed Answer
It replaces the old castle-and-moat perimeter (trust the internal network) with never trust, always verify: strong identity (MFA), least-privilege authorization per request, device posture checks, microsegmentation, and continuous verification. Breaches are contained because being inside the network grants nothing on its own.
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Interview Tip
Contrast it with perimeter/castle-and-moat security and summarize as never trust, always verify.
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