HELPNETSECURITY - Aug 7 - In the first half of 2019 49% of all risky transactions came from mobile devices, up from 30% in 2018, 33% in 2017 and 25% in 2016, according to iovation. iovation came to this conclusion by analyzing the 30B online transactions it evaluated for fraud from January 2016 to June 30, 2019. So far in 2019, the top industry for mobile fraud is telecommunications. In 2018, it was gambling. Communities (social networks or online dating sites) led in 2017.