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---
title: "Zero Trust Architecture (ZTA)"
type: concept
tags: [security, cloud, compliance]
date: 2025-03-01
---
## Definition
零信任架构Zero Trust Architecture是一种安全框架其核心原则是**"永不信任,始终验证"**Never Trust, Always Verify。与传统的边界安全模型不同ZTA假设网络内部和外部都不可信每个访问请求都必须经过验证。
## Core Principles
### 1. Never Trust, Always Verify
```
传统模型: 边界内 = 可信
ZTA模型: 无论位置,均需验证
```
### 2. Least Privilege Access
- 仅授予完成任务所需的最小权限
- 细粒度访问控制
- Just-in-Time (JIT) 访问
### 3. Assume Breach
- 假设系统已被攻破
- 持续监控和检测
- 微分段隔离
## Implementation Pillars
| 支柱 | 描述 | 技术示例 |
|------|------|---------|
| 身份认证 | 强身份验证 | MFA, SSO |
| 设备健康 | 终端安全状态 | MDM, EDR |
| 网络分段 | 微隔离 | VPC, Service Mesh |
| 应用控制 | 最小权限 | RBAC, ABAC |
| 数据加密 | 传输和静态加密 | TLS, KMS |
## In ITSM Context
在[[ITSM]]中ZTA是[[Security-and-Compliance]]的核心:
```
Security & Compliance Management (ITSM 8.0)
├── Zero Trust Architecture (ZTA)
│ ├── 持续身份验证
│ ├── 微分段隔离
│ └── 最小权限原则
├── AI-based Threat Intelligence
│ ├── 行为分析
│ └── 异常检测
└── Policy-as-Code
├── 合规自动化
└── 审计追踪
```
## Related Concepts
- [[Policy-as-Code]] — 策略即代码,合规自动化
- [[Security-and-Compliance]] — 安全与合规管理
- [[Multi-factor-Authentication]] — 多因素认证
- [[Cloud Security]] — 云安全
## Sources
- [[understanding-complete-itsm]] — ZTA在现代ITSM中的应用