More than one billion Android devices are at risk of hacking because they are not protected by the new security updates.
All those using Android phones working on an earlier version of Android 7 are at risk.
According to Google's own data, 42.1% of Android users worldwide are using devices with operating systems 6.0 or below.
According to the operating security bulletin, no security updates were released for Android systems prior to Android 7 in 2019.
After checking the data, Watchdog reported that 2 out of 5 Android users worldwide are no longer receiving security updates.
The company tested 5 phones such as Motorola X, Samsung Galaxy A5, Galaxy S6, Sony Xperia ZTo and LG / Google Nexus 5 which anti-virus lab AV-Comparatives infected these devices with malware. And it successfully infected every phone with malware.
According to the report, the results were shared with Google but it was not guaranteed that it intends to provide updates to users using these older devices.
A watchdog has demanded from Google and other companies to be more transparent about how long it will provide updates to smart devices.
"It's very worrying that the shelf life of expensive Android devices is so short and millions of users are facing serious consequences as a result of security support, as they may suffer from hackers," said Watchdog's computing editor Kate Beavon.
Google and other phone makers should be forthcoming for security updates and provide users with clear information on how long they will be provided and when these updates will be stopped, he said.