The traditional "Castle and Moat" security model assumed anything inside the corporate VPN was safe. In 2025, with remote work and sophisticated phishing, this assumption is fatal.
Never Trust, Always Verify
Zero Trust is not a product; it's a philosophy. It assumes a breach has already happened. Every request—whether from the CEO's laptop or a database server—must be authenticated and authorized explicitly.
Implementing in .NET & Azure
We implement this via Identity-Aware Proxies and Micro-segmentation:
- Identity used as the Perimeter: IP addresses don't matter. Only valid OAuth2 tokens allow access.
- Least Privilege: A service accessing the database should only have permission to read the specific table it needs, not the whole DB.
Implementing Zero Trust reduces the "Blast Radius" of any attack. If one container is compromised, the attacker finds themselves in a sealed room, not the main hallway.