Fixed DTLS Race Condition & Memory Safety

✅ FIXED HIGH CRITICALITY vulnerabilities (October 2024):
- DTLS ClientHello Race Condition: Added source validation
- Memory Safety Issues: Enhanced secure memory cleanup
- Added DTLS protection constants and validation methods
- Improved memory cleanup with secureWipe and zero-filling
- Integrated DTLS protection in handleSecureAnswer

index.html

@@ -161,7 +161,7 @@
             icon: "fas fa-shield-halved",
             color: "orange",
             title: "12-Layer Military Security",
-            description: "Revolutionary defense system with ECDH P-384 + AES-GCM 256 + ECDSA. Enhanced Security Edition v4.01.413 provides military-grade protection exceeding government standards."
+            description: "Revolutionary defense system with ECDH P-384 + AES-GCM 256 + ECDSA. Enhanced Security Edition v4.01.441 provides military-grade protection exceeding government standards."
         },
         {
             icon: "fas fa-bolt",
@@ -511,7 +511,7 @@
                 Enhanced Security Edition Comparison
                 </h3>
                 <p className="text-secondary max-w-2xl mx-auto mb-4">
-                SecureBit.chat v4.01.413 Enhanced Security Edition vs leading secure messengers
+                SecureBit.chat v4.01.441 Enhanced Security Edition vs leading secure messengers
                 </p>
                 <div className="inline-flex items-center px-4 py-2 bg-yellow-500/10 border border-yellow-500/20 rounded-lg">
                 <span className="text-yellow-400 mr-2">🏆</span>
@@ -657,7 +657,7 @@
                 <div className="p-6 bg-gradient-to-r from-orange-500/10 to-yellow-500/10 border border-orange-500/20 rounded-xl">
                     <h4 className="text-xl font-bold text-orange-400 mb-4 flex items-center">
                     <i className="fas fa-trophy mr-3" />
-                    SecureBit.chat v4.01.413 Enhanced Security Edition Summary
+                    SecureBit.chat v4.01.441 Enhanced Security Edition Summary
                     </h4>
                     <p className="text-secondary leading-relaxed text-lg mb-4">
                     SecureBit.chat dominates in 11 out of 15 security categories, establishing itself as the most secure P2P messenger available.