A Systematic Study of Android Non-SDK (Hidden) Service API Security. (arXiv:2203.09374v1 [cs.CR])

Android allows apps to communicate with its system services via system
service helpers so that these apps can use various functions provided by the
system services. Meanwhile, the system services rely on their service helpers
to enforce security checks for protection. Unfortunately, the security checks
in the service helpers may be bypassed via directly exploiting the non-SDK
(hidden) APIs, degrading the stability and posing severe security threats such
as privilege escalation, automatic function execution without users'
interactions, crashes, and DoS …

android api api security hidden non sdk security service