Wednesday's search giant said the Google Play Store scans more than 50 billion apps every day on users' devices to identify and stop bad apps, according to a post on the Android Developers blog.
The Play According to the blog, Store 2018 rejected at least 55 percent more app submissions than in 2017. Google did not immediately respond to a request for how many apps were declined in 2018. However, in 2017, the company removed over 700,000 apps.
Google said that the company requires third-party app developers to be transparent app collected and used sensitive user data. The search giant has rejected or removed tens of thousands of apps over the past year because they did not follow this rule.
The search giant has found that 80 percent of malicious developers are repeat offenders and sometimes work on a network. Google has used Machine Learning and Human Reviewers to prevent apps from being published.
"We know that bad actors will continue to try to escape our systems by changing their tactics and disguising bad behavior," wrote Andrew Ahn, product manager of Google Play, in the blog post. "We will continue to develop our capabilities to counter such conflicting behaviors and work tirelessly to provide our users with a secure and secure app store."