Sophos Specialists revealed in the Google Play catalog 25 applications that continued to collect money from users after the end of the trial period. Interestingly, these applications have been installed in total more than 600 million times.
Such applications are referred to as fleeceware. With this word, recently they began to designate applications that abuse the functionality of Android, which allows applications to have a trial period, at the end of which money is debited from the user's account.
By default, users should cancel trial periods of applications manually to avoid subsequent payment. But statistics say that most users simply delete applications if they do not like them, and most developers interpret this as canceling the trial period and do not charge.
However, last year, information security specialists for the first time have noticed applications that abused this functionality ignored the deletion and end of the trial period, and continued to charge users a lot of money (from $ 100 to $ 240 per year) for the simplest tools, such as QR code scanners and calculators.
Sophos experts have now discovered yet another set of such fleeceware applications. Given that they total more than 600,000,000 installations, analysts believe that fraudulent schemes could be used to promote them: applications could use third-party services with payment for installation and buy fake five-star reviews to increase their rating on the Play Store. A list of fleeceware applications, indicating their value that is not obvious to users, can be seen below.