Change the default PIN code for more security.The default PIN code for an AT&T SIM card is 1111.When enabling SIM lock, your device prompts you to enter a PIN code: carriers offer this option – take them up on it. You can add another layer of protection to your phone by adding a SIM PIN or passcode. The good news? You can take steps to decrease the chances that a SIM hack will happen to you. They call the phone provider, pretend to be that specific victim, and ask to swap the victim’s SIM account information to a new SIM card – one that is in their possession.” “2FA might stop hackers from using easily searchable information like someone’s mother’s maiden name, but these bad actors have already discovered the weak link in this particular chain. In this week’s Cloud Security Tip, Steve Prentice explains why two-factor authentication (2FA) is not enough. This allows the hacker to intercept any 2FAs sent via text or call.which means they can obtain access to any account that uses 2FA, such as Amazon, Ebay, and Paypal, and bank accounts. Once this happens, the victim's phone will lose connection to the network and the hacker will receive all the SMS and voice calls intended for the victim. The hacker uses different techniques to convince the telephone company to port the victim's phone number to the hacker’s SIM. The same scenario happens: the hacker obtains personal information about the victim, and then contacts the victim's mobile telephone provider. SIM hacking is not exclusive to T-Mobile though - in fact, this could happen at any carrier. Once the hackers had that, they would impersonate the victim with T-Mobile’s customer support staff, ask for a new SIM card number, and hijack their phone numbers. It seems harmless, but just by knowing customer’s phone numbers, hackers could obtain their data. Standardized number that identifies subscribers). Their billing account numbers, and the phone’s IMSI numbers (a unique, The bug exposed customers’ email addresses. The bug was very well known in the criminal underground and there was even a tutorial on how to exploit it on YouTube. A few years ago, hackers found a bug that allowed them to access personal data on any T-Mobile customer.

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