The document provides a feedback on lessons learned through the implementation of Tizen security framework in version 2 & 3. Tizen security framework mostly
relies on: Smack for rules and Cynara for privileges, completed by a mix of DBus,  application manager and security manager for the orchestration.

The document starts with an introduction of Tizen Security Model before presenting lessons learnt from its implementation. Reader interested in further information will find an annex with more details about Tizen security concepts, as well as a few  pointers to external references.

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