Hackers have been increasingly targeting individuals by stealing their phone numbers through a process known as port-out hijacking. This method allows them to bypass security measures such as two-factor authentication, gaining access to sensitive accounts, including bank accounts. In one reported case, a victim lost $19,000 due to this type of scam. The stolen phone numbers, including those from AT&T, can be used in various money-related scams, making it crucial for individuals to be vigilant and aware of these threats.