The 'abuden25' package in the npm ecosystem is identified as malicious software. According to the source details, any system with this package installed should be considered fully compromised. The attacker may have gained full control, and secrets or keys stored on the system are at risk. Removal of the package is recommended but may not suffice to fully remediate the infection due to potential persistence mechanisms.

Full compromise of the affected system is expected. All secrets and keys stored on the compromised computer are at risk and should be rotated immediately from a secure, unaffected environment. The presence of this package indicates that an attacker may have established persistent control, leading to potential data theft, system manipulation, or further malicious activity.

Remove the 'abuden25' package immediately from affected systems. Rotate all secrets and keys that were stored on the compromised machine using a different, secure computer. Due to the likelihood of persistent compromise, consider rebuilding the affected system from a known clean state to ensure complete removal of malicious code and backdoors.