93 percent of total mobile transactions in 20 countries were blocked as fraudulent in 2019 according to a report on the state of malware and mobile ad fraud released today by mobile technology company, Upstream. The “Invisible Digital Threat” data is based on deployments of Upstream’s Secure-D full-stack anti-fraud platform that detects and blocks fraudulent mobile transactions mostly originated from ad fraud malware. The platform at the end of 2019 covered 31 mobile operators in 20 countr...