Angular Excessive Data Exposure: Examples and Prevention

Excessive data exposure in web applications is a significant security concern where sensitive data is unnecessarily sent from the server to the client, potentially exposing critical information to attackers. This issue often arises when back-end APIs return more data than necessary for front-end use, which attackers can exploit by inspecting network requests. In Angular applications, this vulnerability can be mitigated by ensuring back-end REST APIs are structured to only send required data and by using GraphQL to explicitly request only necessary data, thereby preventing exposure of sensitive information. The post illustrates this with examples and practical steps for preventing excessive data exposure, emphasizing collaboration between front-end and back-end teams to enhance application security. Written by Siddhant Varma, a full-stack developer with extensive experience in frontend engineering, the post highlights the importance of responsible data handling and provides insights into securing web applications against data exposure vulnerabilities.