Mobile Apps and Privacy Trends

**Executive summary:** Zscaler analyzed mobile traffic in its cloud and found measurable privacy leakage — primarily device metadata and location data, with a small portion of PII — across millions of Android and iOS transactions (roughly 20M Android and 26M iOS quarterly), resulting in nearly 200,000 observed leak instances; the report highlights developer testing gaps and recommends MDM and app-security controls to mitigate data loss and downstream targeted-attack risks.