IIFA: Modular Inter-app Intent Information Flow Analysis of Android Applications.

Android apps cooperate through message passing via intents. However, when apps have disparate sets of privileges inter-app communication (IAC) can accidentally or maliciously be misused, e.g., to leak sensitive information contrary to users’ expectations. Recent research has considered static program analysis to detect dangerous data leaks due to inter-component communication (ICC), but suffers from shortcomings for IAC with respect to precision, soundness, and scalability.