Simjacker Attacks & Malicious SMS Text Messages
The most recent way that attackers have started using to access sim cards is through the “simjacker method”. For the past few years, hackers have exploited a browsing software found in most sim cards (S@T Browser) by sending a malicious text containing the simjacker code. Once opened, the SMS messages containing simjacker code utilize the software to export sensitive information to an alternate device. Many mobile operators fall into the simjacker attack and never realize that their data has been hacked by people in other countries. Not only do simjacker victims have their personal information jeopardized, but they also let this spyware-like code install instructions that the sim card will carry out, letting the attacker continue accessing the information until something disrupts their access.
The most efficient procedure that you can use to prevent this so-called simjacker process is to avoid malicious SMS messages at all costs. If you do not recognize text messages, you should probably just delete them, because it can be very challenging to undo the damage caused by clicking that harmless-looking link.
Sim Swapping Through Your Network Provider
Believe it or not, this highly-simple tactic has been used to breach the sim cards of public figures and regular citizens alike. For this hacking technique, all hackers really have to do is call your mobile phone provider and request a new sim card due to issues or a device upgrade. While it will not always work, the attack begins as soon as your provider relinquishes a new sim card to the malicious party. If these attacks are successful, the other party is able to assume control over phone numbers from other countries!
To mitigate your risk of a sim swapping invasion, utilize two-factor authentication codes whenever possible. While the process of verifying and re-verifying for any important decisions can be a hassle, the extra effort will also deter your phone from becoming a target device. The idea is to never let attackers gain access to your sim card or any other personal information, and the SMS message that you have to pull a code from could save your data security one day.