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Discussion on: What the Zscaler Data Breach Teaches Us About OAuth, SaaS Risks, and Developer Responsibility

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Alex Vakulov

This breach proves a brutal reality: Zero Trust means absolutely nothing if your third-party SaaS integrations are implicitly trusted. When attackers steal valid OAuth bearer tokens, your WAF, IAM, and MFA become entirely useless. The attackers did not hack into Salesforce; they simply used active, high-privilege keys to execute mass data collection via standard Bulk APIs.

If your platform teams are still granting perpetual, broad scopes (full_access) to third-party tools just to speed up development, you are actively building the next supply chain backdoor. Security must transition to continuous, context-aware runtime authorization—where token lifecycles are strictly limited, and any anomalous, high-volume API activity is automatically throttled and blocked.