Atlantis AIO is an AI-driven fraud-as-a-service tool available on the dark web for $150 per month, enabling users to perform credential stuffing attacks by testing millions of stolen login credentials across over 140 online services. This practice exploits the tendency of individuals to reuse passwords, facilitating account takeover (ATO) attacks when a valid login is found, allowing fraudsters to steal money, data, or launch further attacks. In response to the rise of AI-powered cybercrime, businesses are increasingly turning to device intelligence, a method of analyzing unique device signals such as browser type, operating system, and IP address to detect fraud. Unlike cookies, which have become less reliable due to privacy measures, device intelligence offers a more consistent and anonymized way to identify and monitor devices, even amidst changes like incognito mode or IP masking. This approach enables businesses to discern fraudulent activity, such as multi-accounting or regional pricing fraud, while also enhancing user experience for legitimate customers by reducing the need for stringent security measures. As digital fraud continues to evolve, device intelligence emerges as a vital tool in maintaining security and trust in online interactions.