Even though 4G networks are ubiquitous and 5G is already a reality in many different places, 2G connections are once again in the spotlight because of their risksThis is not the first time that the dangers of this type of connection have been raised, but Google has once again put 2G networks in the spotlight.
Many operators have chosen to disable 2G, but The network will continue to provide service for several more years: In Europe, some telephone operators are considering the possibility of permanently disabling 2G in 2030. It is important to keep in mind that even if it remains active, it represents a security risk for mobile phones that support 2G.
If your mobile supports 2G networks you could be a victim of serious attacks
One technique that exploits the weak points of these connections is Stingrays Or Fake base stations (FBS), fake stations with which attackers can intercept communications and monitor users. For some time now, they have also been used for financial fraud, which some providers have already warned against. In addition, they can also be used to infect the user’s mobile phone with malware.
Google once again warns of the risks of this type of threat. In a comprehensive post recently published on its security blog, the tech giant claims that there is growing evidence of exploiting weaknesses in mobile communications standards 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, which is a serious problem. Major phone operators call this type of fraud SMS Blaster and cases have been detected in different countries.
As we have already mentioned, the goal of the criminals is to inject fraudulent text messages into users’ mobile phones. This is something they achieve by using 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 that connect to the stations. The operation is very simple: a 2G network is created that takes advantage of the weak 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 o Fraud and Security Group, in Spanish) belonging to the GSMA (a global organization of telephone operators) has published an informative document for raise awareness and alert on the risksThe document (available to members only) highlights some Android features that help protect us against these threats.
One such feature arrived in early 2022 with Android 12. Specifically, this version gave us the ability to completely disable 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, simply enter Settings > Networks and Internet > SIM and make sure to turn off the option Allow 2G by pressing the corresponding button. In this way, we will ensure that we are protected against this security threat.
By | Google
Cover Image | Microsoft Designer Image Creator
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