WhatsApp regularly patches exploits that allow spyware (like Pegasus) or account takeover via malicious GIFs or video calls. If you are on version 2.23.18.79, you are missing over 12 months of security patches. You are essentially using a front door with a broken lock.
WhatsApp utilizes the Noise Protocol Framework for secure transport. Modern implementations of Noise require strong entropy and specific TLS handshake mechanisms. whatsapp for android 4.4.2
Over time, your chat database (msgstore.db) gets huge. Android 4.4.2 can't handle databases over 100MB. WhatsApp regularly patches exploits that allow spyware (like
The core of WhatsApp’s functionality is the Signal Protocol (formerly TextSecure). This protocol provides forward secrecy and authentication. The core of WhatsApp’s functionality is the Signal