If you're trying to monitor an employee's device, you need .

If you're just curious about how encryption works: modern WhatsApp traffic is secured with the Signal Protocol. Sniffing network packets will only give you encrypted garbage, not readable messages.

I understand you're looking for information about "WhatsApp sniffer APK" — but I need to be clear and responsible here.

If you tell me what you're actually trying to achieve (parental control, backup recovery, etc.), I can point you toward a legitimate, safe solution.