Enhancing the security of WhatsApp calls

What this post added

Introduced 'Silence Unknown Callers' feature for WhatsApp calls, which silences calls from unknown numbers and protects users from cyber attacks by using a specialized protocol enforced by servers to reduce the attack surface. Developed a new technology called privacy tokens to enable server-side silencing without compromising end-to-end encryption or user privacy. Implemented 'Protect IP Address in Calls' feature, relaying calls through WhatsApp servers to hide user IP addresses and general geographical location from other call participants, enhancing privacy.