Constant integration of new technologies in our daily lives exposes us to various security threats. While numerous security solutions have been developed to protect us from these threats, they fail due to users’ insufficient comprehension of how to employ them optimally. This challenge often stems from inadequate capture of Usable Security (USec) requirements. This paper aims to tackle this issue by proposing US4USec, a User Stories (US) model tailored for capturing USec requirements. US4USec has been constructed based on best practices for the consideration and integration of non-functional requirements (NFR) into US models that have been identified via a Systematic Literature Review (SLR). The coverage and completeness of US4USec have been demonstrated by applying it to a set of security US.