With so many applications found on the Google Play Store, it shouldn’t be surprising that Android devices can get infected with potentially unwanted programs, or PUPs, like adware apps. These are not only annoying but they can also steal private information such as credit card details.

Zscaler recently reported that 17 adware apps in Google Play were downloaded over 120,000 times. These apps display unwanted advertisements on your device and collect marketing-type data about you, generating revenue for their operators in the process.

A recent report by Sophos uncovered 15 adware apps in Google Play. These apps run unwanted ads on your device and collect marketing-type data about you. What’s more alarming is that 1.3 million Android users have downloaded at least one of these apps.