This vulnerability could expose users worldwide to the risk of data theft, ransomware, and other malware attacks.
The biggest concern for those with devices manufactured in 2012 or earlier is the cyber security portal EXE News.
According to Google's own data, 42.1 percent of all Android mobile phones use OS 6.0 or lower. However, according to the Android Security Bulletin, no security update was released last year for any Android 7 or lower mobile device.
This means that for every five Android users, two of them no longer receive security updates for their mobile.
The portal tested well-known mobile phones such as Motorola X, Samsung Galaxy A5, Sony Xperia Z2, LG / Google Nexus 5 and Samsung Galaxy S6 with the help of AV Comparatives, an antivirus lab, and managed to infect all of them with malware.
However, Google, the creator of Android, boiled down to any kind of substantive comments.
Obviously, Google needs to extend the lifetime of security support for Android devices, and mobile manufacturers also have a role to play.
How do I check for an Android update?
If your mobile is older than Android 7.0 Nougat, try updating it from Settings> System> Advanced> System Update.
If you cannot update your device, your phone may be at risk of hacking. You should be especially careful when downloading apps outside of the Google Play Store. You also need to be careful when opening suspicious SMS or MMS messages.
It is a good idea to install an anti-virus application on your device.