The npm package @nyzzpediaa/baileys-new contains malicious code that silently subscribes the installer's WhatsApp account to attacker-controlled channels without user consent. This is done by injecting a covert FOLLOW query into the WhatsApp socket connection using the installer's authenticated session. The targeted channel IDs are obfuscated or fetched dynamically, allowing attackers to change targets post-installation. The malicious code does not steal credentials, maintain persistence, or execute arbitrary code.