CoyIM and Signal target entirely different threat models, making the “better” privacy option depend completely on your specific goals. If your priority is maximum data and network anonymity to hide from nation-state surveillance, CoyIM offers superior privacy because it completely masks your network metadata via Tor and does not require personal identifiers. If your priority is a secure everyday messenger that protects message content while remaining highly usable for chatting with friends and family, Signal is the gold standard. Privacy and Security Architecture Comparison
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