E-commerce platforms are increasingly embedding fraud prevention as a core feature to protect both merchants and consumers, moving away from a fragmented, merchant-led approach. These platforms, like Shopify Payments and WooPayments, face sophisticated fraud tactics involving stolen cards and synthetic identities, necessitating a shift from reactive to preventive measures. By employing real-time device intelligence, these platforms can identify and block fraudsters across multiple merchants, reducing chargebacks and promo abuse while enhancing the overall security and efficiency of transactions. This unified, platform-level fraud defense not only adds value for merchants by offering safer and faster payment processes but also strengthens the platform's reputation for reliability and trust. As platforms gather and utilize cleaner, more accurate device-level data, they can provide a seamless shopping experience for legitimate users, fostering growth and trust across the e-commerce ecosystem.