As of August 2019, there are more than 5 billion mobile devices worldwide. A staggering 67 percent of the population has some kind of mobile device. Recent news involving high-profile individuals is drawing attention to SIM-swapping and SIM cloning attacks. IBM X-Force Incident Response and Intelligence Services (IRIS)s findings from dark web research also reveal attackers interest in these types of attacks. In May 2019, nine people were charged in the U.S. with theft via SIM swapping, resulting in a $224 million lawsuit.”]
Source: https://securityintelligence.com/posts/clone-or-swap-sim-card-vulnerabilities-to-reckon-with/