What is Zero Trust Security?
Turkish: Zero Trust
Zero Trust continuously validates each user, device, and request by identity, context, and permission instead of trusting network location.
What is Zero Trust Security?
Zero Trust is a security approach that does not treat being on the company network as automatic proof of trust. Whether a user is in the office, at home, or on an external network, access to an application is evaluated against identity, device posture, permission, and context.
Traditional network security often assumes that the internal network is safe. Zero Trust assumes that an account or device may be compromised and limits damage by granting only the minimum access needed.
How Does Zero Trust Work?
Zero Trust is not a single product; it is a set of control layers working together:
- Strong identity: SSO, MFA, and centralized user management
- Least privilege: Access only to the applications and data required for the role
- Device verification: Managed device checks, current operating systems, encryption, or EDR signals
- Microsegmentation: Splitting networks or applications into smaller access zones
- Continuous monitoring: Session, location, risk, and unusual-behavior logging
OAuth2 and similar authorization standards can support the identity layer of a Zero Trust architecture when applications need controlled access to one another.
Business Use
Zero Trust is especially relevant for remote work, SaaS adoption, supplier access, admin panels, and systems that hold sensitive customer data. The goal is not to slow users down; it is to prevent one compromised account from moving freely across the environment.
In practice, teams start by mapping identities, critical applications, and high-risk access paths. MFA requirements, privileged-account controls, device policies, and detailed logging are then introduced in stages. Zero Trust is less a one-time installation and more a security architecture that is continuously reviewed.
Related Terms
ABAC is an authorization model that evaluates user, resource, action, and environment attributes instead of relying only on roles.
MFA (Multi-Factor Authentication)MFA protects sign-ins by requiring extra factors such as an authenticator app, device prompt, biometrics, or a security key.
Mutual TLS (mTLS)Mutual TLS verifies both client and server certificates during a TLS connection, reducing trust in network location alone.
Network SegmentationNetwork segmentation separates users, servers, and systems into controlled network zones to limit unauthorized access and attack spread.
OAuth 2.0OAuth 2.0 is an authorization framework that allows third-party applications to access resources without the user's password.
RBAC (Role-Based Access Control)RBAC is an authorization model that assigns permissions to job roles instead of individual users, making access management easier to govern.
Secrets ManagementSecrets management securely stores, distributes, rotates, and audits sensitive values such as API keys, passwords, and certificates.