https://motherboard.vice.com/en_us/article/a3q7mz/hacker-allegedly-stole-millions-bitcoin-sim-swapping

The cops are starting to close in on hackers who hijack phone numbers to steal Bitcoin and other cryptocurrencies.

On July 12, police in California arrested a college student accused of being part of a group of criminals who hacked dozens of cellphone numbers to steal more than $5 million in cryptocurrency. Joel Ortiz, a 20-year-old from Boston, allegedly hacked around 40 victims with the help of still unnamed accomplices, according to court documents obtained by Motherboard.