UK banks have teamed up with all four of the country’s MNOs and the GSMA to counter the growing scourge of authorized push payment (APP) fraud by correlating the fraudulent actions with associated phone calls. In this way, banks aim to identify the transactions in near real time so that they can block the money transfers to the fraudsters’ accounts. Called Scam Signal, the platform accesses live data about phone calls from the UK’s mobile services via network APIs, in line with the GSMA’s Open Gateway initiative, to stimulate development of applications that exploit capabilities of mobile infrastructure. Scam Signal is significant both in underscoring the potential of network APIs to generate new services through cooperation among MNOs, and for…