Mojave Threat Labs analyzes thousands of mobile apps using more than 200 individual risk factors. One of the key risk factors that we track is private data or personally identifiable information that is collected and sent to remote web APIs. On average, corporate employees and mobile users have around 200 applications on their mobile devices. Each application has an average of nine permissions that users agree to before using the app things like permission to access your address book or your location in order to tell you about whats nearby.”]
Source: https://informationsecuritybuzz.com/articles/mobile-ad-libraries-create-major-risk-enterprise-data/