First Malicious MCP Server Found Stealing Emails in Rogue Postmark-MCP Package The Hacker [email protected] (The Hacker News)

Cybersecurity researchers have discovered what has been described as the first-ever instance of a Model Context Protocol (MCP) server spotted in the wild, raising software supply chain risks.
According to Koi Security, a legitimate-looking developer managed to slip in rogue code within an npm package called “postmark-mcp” that copied an official Postmark Labs library of the same name. The Cybersecurity researchers have discovered what has been described as the first-ever instance of a Model Context Protocol (MCP) server spotted in the wild, raising software supply chain risks.
According to Koi Security, a legitimate-looking developer managed to slip in rogue code within an npm package called “postmark-mcp” that copied an official Postmark Labs library of the same name. The 

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