"UCP as implemented by Google means retailers will be exposing REST (Representational State Transfer) endpoints to create, update, or complete checkout sessions. "That's an additional attack surface beyond your web/app checkout. API gateways, WAF/bot mitigation, and rate limits become part of checkout security, not just a 'nice-to-have'. This means that CIOs will have to implement new reference architectures and runtime controls; new privacy, consent, and contracts protocols; and new fraud stack component integration.""
""This is a major shift in posture. It pushes retail IT teams toward deliberate agent gateways, controlled interfaces where agent identity, permissions, and transaction scope are clearly defined. The security challenge isn't the volume of bot traffic, but non-human actors executing high-value actions like checkout and payments. That requires a different way of thinking about security, shifting the focus away from simple bot detection toward authorization, policy enforcement, and visibility,""
UCP as implemented by Google exposes REST endpoints for creating, updating, and completing checkout sessions, increasing attack surface beyond web and app checkouts. API gateways, WAF/bot mitigation, and rate limits must become integral to checkout security rather than optional protections. CIOs will need new reference architectures, runtime controls, privacy and consent protocols, contract updates, and fraud-stack component integration. Retail IT must adopt deliberate agent gateways with controlled interfaces that define agent identity, permissions, and transaction scope. The primary security risk is non-human actors executing high-value actions like checkout and payments, requiring authorization, policy enforcement, and enhanced visibility instead of simple bot detection.
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