Bridging the Browser-to-Boundary Gap: From Client-Side SPA State Reconnaissance to Safe Harbor Verification
🔍 The Modern SPA Testing Paradox For more than two decades, the standard operating procedure for web application security assessments has centered around the interception proxy. Tools like Burp Suite, OWASP ZAP, and Caido position themselves between the browser and the target origin, capturing every HTTP request and response traversing the network socket. In traditional server-rendered architectures (PHP, ASP.NET, Rails), this model was nearly exhaustive: every routing decision, session transition, and authorization challenge occurred strictly across the wire. ...