Although 4G networks are everywhere and 5G is already a reality in many different places, 2G connections are back in the spotlight due to their risksThis is not the first time we have talked about the dangers of this type of connection, but Google has once again put 2G networks in the spotlight.
Many operators have chosen to turn off 2G, but The network will continue to provide service for several more years.In Spain, some telephone operators are considering the possibility of permanently deactivating 2G in 2030. It is important to bear in mind that as long as it remains active, it poses a security risk for mobile phones that support 2G.
If your mobile supports 2G networks you could be a victim of serious attacks
One of the techniques that exploits the weak points of these connections are the Stingrays either False Base Stations (FBS), fake stations with which attackers are able to intercept communications and monitor users. They have also been used for financial fraud for some time now, something that some providers have already warned about. In addition, they can also be used to infect the user’s mobile phone with malware. malware.
Google has once again warned about the risks of this type of threatIn a comprehensive article recently published on its security blog, the tech giant claims that there is growing evidence of weaknesses in mobile communication standards being exploited to inject fraudulent text messages (smishing) on users’ mobile phones.
One of the risks of this method is its ability to Avoid spam and fraud filters network-based scams, which is a serious problem. Major mobile providers refer to this type of fraud as SMS Blaster and cases have been detected in different countries.
As we have already mentioned, the aim of the criminals is to inject fraudulent text messages into users’ mobile phones. This is something they achieve by making use of fake communication stations. hidden in vehicles or even in backpacks.
These types of devices can be obtained relatively easily and anyone with the necessary knowledge can use them to Send SMS to users which connect to the stations. The operation is very simple: a 2G network is created which takes advantage of the low security of these networks to ensure that the messages sent reach the victim.
The problem is so serious that the FASG (Fraud and Security Group or Fraud and Security Group, in Spanish) belonging to the GSMA (a global organization of telephone operators) has published an information document for raise awareness and alert about the risksThe document (available to members only) highlights some Android features that help protect us from these threats.
One of these features arrived in early 2022 with Android 12. Specifically, this version gave us the possibility of completely disabling 2G mobile connections. Although it was initially only available on the Google Pixel, it was later extended to other manufacturers.
This is something we can do easily from the device settings. To do this, we just have to go to Settings > Networks and Internet > SIM and make sure to disable the option Allow 2G by clicking the corresponding button. This way we will ensure that we are protected against this security threat.
Via | Google
Cover image | Microsoft Designer Image Creator