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Last updated: April 29, 2026
Why this module. Most API-security advice covers north-south (internet to API). In microservices, east-west traffic (service to service) is 10x more volume and often less protected. Compromise one service, lateral movement to others.
Why this module. Most API-security advice covers north-south (internet to API). In microservices, east-west traffic (service to service) is 10x more volume and often less protected. Compromise one service, lateral movement to others.
The trust model that fails
“Internal services trust each other; auth happens at the edge.” Once an attacker is inside (via vuln in any service), they can hit every other service freely. Modern threat model: zero trust east-west too.
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