Peer-to-peer (P2P) payment apps like Venmo, PayPal, Cash App, Zelle, and Google Pay have gained immense popularity due to their convenience, low fees, and fast transaction speeds, propelling a shift toward a cashless society. However, this growth attracts fraudsters, leading to a rise in scams such as fake apps, phishing, and unauthorized transactions. Each platform faces unique challenges, with Venmo and PayPal experiencing fraudulent refund requests, while Cash App contends with fake customer service numbers and sweepstakes scams. Zelle users face risks from phony support lines, and Google Pay and Apple Pay are targeted by phishing schemes and misuse of stolen credit cards. Despite these risks, P2P payments are increasingly integrated into daily life, but users and businesses must remain vigilant against potential fraud. Fingerprinting technology offers a potential solution to combat these threats by identifying and blocking fraudulent activities in real-time.