The polymarket-toolkit npm package version 1.4.9 is a malicious package masquerading as a Polymarket API client. Its default export performs unconditional remote code execution by fetching and executing JavaScript code from a remote server with full Node.js privileges. This allows an attacker to gain complete control over the affected system. The package includes unrelated dependencies consistent with credential and machine fingerprint extraction, indicating its intent as a brand-impersonating dropper targeting developers. Any system with this package installed should be considered fully compromised.