This paper proposes an investigation on the effect of mobile users’ privacy expectation disconfirmation on the continued usage of apps sourced from different app distribution stores. Drawing upon the security awareness literature and expectation-disconfirmation perspective, we identify two key types of securityawareness information, namely access annotation and modification annotation. It is noted that these types of information can be emphasized in app distribution stores to reduce subsequent privacyexpectation disconfirmation. This study plans to examine the downstream effect of privacy expectation disconfirmation on continued usage intention. To operationalize the study, a longitudinal experiment will be conducted. Expected theoretical contributions and practical implications are discussed.