«The decrease in
PHA install rate is primarily due to campaigns to clean up apps in the Ghost Push family,» Google said.
As a result, in October 2017, we enabled offline scanning in Play Protect, and have since prevented 10 million more
PHA installs.
Since Google started measuring Android security in 2014, it's found that on average less than 1 percent of devices have
PHAs installed.
Overall, the rate of
PHA installs, both inside and outside of Google Play, dropped in 2016 compared to 2015, «primarily as a result of improved detection of large families such as Ghost Push,» the report said.
By Q4 2016, fewer than 0.71 percent of devices had
PHAs installed.
Not exact matches
In 2016, 0.77 percent of devices had
installed a
PHA, compared to 0.56 percent in 2017.
Copycats accounted for more than 250,000 of the 700,000 rejected apps during 2017, while
PHAs (Potentially Harmful Applications) are described as «small in volume», commanding 50 percent fewer
installs than the previous year thanks to Google Play Protect.
To help combat malicious apps that users either knowingly or unknowingly
install on their devices from outside the Google Play Store, Play Protect scans through every Android device (running Android 4.3 Jelly Bean or above) looking for these potentially harmful apps (
PHAs) and removes them.
Users are told to opt into Google Play Protect and to download apps exclusively from the Google Play Store because «the chance you will
install a
PHA [potentially harmful app] is much lower on Google Play than using other
install mechanisms».