Angular Broken Authentication Guide: Examples and Prevention

Authentication plays a crucial role in application security, but it can be vulnerable if not managed properly, leading to potential breaches. The text discusses broken authentication vulnerabilities in Angular applications, highlighting both server-side and client-side weaknesses. On the server side, issues arise when session IDs or authentication tokens are not properly managed, potentially allowing attackers to hijack sessions. It is recommended to generate new session IDs for each session and implement session expiration. On the client side, vulnerabilities occur when sensitive data such as session IDs are exposed, for instance, in URLs. To mitigate these risks, session management should be handled using secure practices such as storing session IDs in browser storage rather than in URLs. The text provides a detailed example of implementing these security measures in an Angular application, showcasing how to manage sessions securely. It also emphasizes the importance of using strong password validations and auto sign-out features to enhance security. The article, authored by Siddhant Varma, who is experienced in frontend engineering, underscores the necessity of implementing robust authentication systems primarily on the server side for better security.