zDefend by Zimperium is a runtime application self-protection (RASP) solution designed for mobile application security. It offers an outside-in approach to mobile in-app protection through a software development kit (SDK) that can be embedded into iOS and Android applications. zDefend enables host applications to detect and proactively protect themselves by taking actions on the end user's device, even without network connectivity. It leverages Zimperium's patented machine learning-based threat detection engine, z9, to provide on-device protection. zDefend's capabilities allow for continuous monitoring, protection, and effective threat modeling within the mobile DevSecOps life cycle.