Level 1 Workstation Server Initial Setup Configure Software Updates Manual IG1 IG2 IG3 7.3 Perform Automated Operating System Patch Management T1195 T1195.001 T1195.002 TA0001 M1051 1.2.2 Ensure GPG keys are configured Audit# Verify GPG keys are configured correctly for your package manager: # apt-key list Remediation# Update your package manager GPG keys in accordance with site policy.