Xiaomi phones are pre-backdoored; your apps can be silently overwritten

Thijs Broenink audited the AnalyticsCore.apk app that ships pre-installed on all Xiaomi phones (Xiaomi has their own Android fork with a different set of preinstalled apps) and discovered that the app, which seemingly serves no useful purpose, allows the manufacturer to silently install other code on your phone, with unlimited privileges and access. (more…)