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Lessons from the Postmark-MCP Backdoor

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The Koi Security team recently uncovered the first known, malicious MCP server in the wild: a package called postmark-mcp, downloaded over 1,500 times per week, that silently BCCs every outgoing email to an attacker-controlled domain. So, what happened?  High-level, a lot: The attacker cloned the legitimate Postmark MCP repository, made one small but nefarious change […]

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2025-10-04

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Identities and Sequences V

When thinking about the identity property and sequence objects, which of these can generate values before an insert statement is executed?

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