AWS WAF Dynamic Label Interpolation Fights Session Hijacking with JA4 Fingerprinting

AWS WAF's Dynamic Label Interpolation can forward JA4 TLS fingerprints to applications, enabling session binding that detects stolen cookies. Even if an attacker steals a session cookie, the application can reject it if the attacker's TLS stack differs from the legitimate user's. This technique adds a location-independent layer of security against infostealer malware.