The npm package @mivesensei/baileys version 0.4.2 is a malicious fork of the Baileys WhatsApp Web library. It injects code that silently subscribes the victim's WhatsApp account to attacker-controlled channels without user consent by issuing authenticated FOLLOW queries using the victim's session. The targeted channel IDs are obfuscated or dynamically fetched to avoid detection. The malicious code does not steal credentials, maintain persistence, or execute arbitrary remote code.