Tenant Membership Confirms Identity, Not Resource-Level Permissions

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A common security mistake in software development conflates tenant membership with resource-level authorization. Belonging to the same organization or workspace only confirms that a user is part of that org, not that they are allowed to perform specific actions on specific resources. Developers often write flawed logic that grants access simply because a user's tenant ID matches a resource's tenant ID. Correct authorization requires separately verifying whether a user may perform a given action on a particular object. Membership and permission answer fundamentally different questions and must be handled independently in access control systems.

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