Abstract: Methods and systems for context-aware security overlays for conversational user interfaces are provided. User-provided data is detected at one or more input fields of a user interface of a client device associated with a first user. The input field(s) are associated with an operation of a computing system that generates a response to the user-provided data. A determination is made that a data item of the user-provided data and/or the generated response satisfies one or more data security criteria. The UI is updated to include one or more security UI elements indicating that the data item satisfies the data sensitivity criteria. Responsive to a detection of a user interaction with the one or more security UI elements by a second user, the response to the user-provided data is modified. The modified response is provided to the user-provided data for presentation via the client device associated with the first user.