The def-open-client package distributed via npm has been identified as containing malicious code. According to the source advisory, any system with this package installed should be considered fully compromised. Attackers may have gained full control over the system, potentially accessing and exfiltrating sensitive information such as secrets and keys. Immediate rotation of all credentials from a separate, trusted system is advised. Because the malicious code may have established persistence beyond the package itself, simply uninstalling def-open-client does not ensure complete remediation.

Full system compromise on any machine with the def-open-client package installed. Potential exposure and theft of all secrets and keys stored on the compromised system. Persistent malicious presence may remain even after package removal, risking ongoing unauthorized access and control.

Remove the def-open-client package immediately. Rotate all secrets and keys from a separate, uncompromised system. Consider the affected computer fully compromised and perform a thorough forensic analysis and system rebuild if possible. There is no known patch or fix for this malicious package; remediation relies on removal and credential rotation.