The FTCs chief technologist Lorrie Cranor was hacked by someone posing as her went into a mobile phone store and hijacked her number. The criminal obtained in this way two brand new iPhone devices assigned to her telephone numbers. In January 2013, the FTC received 1,038 claims for mobile hijacking, this kind of practice accounts for about 3.2% of all the identity thefts reported that month to the FTC. By January 2016, the number of reports of 2,658 hijacks, representing 6.3% of identity thefts that month.”]
Source: https://securityaffairs.co/wordpress/48147/cyber-crime/id-theft.html