Enable third-party vendor accounts only when needed and monitor when in use |
Organizations shall never allow 24/7 access to their systems by third party vendors for support and maintenance purposes, because this increases the chances of attack. You should only enable vendor accounts when needed and disable as soon as they are done working to prevent any misuse. When vendor accounts are used, their activity must be monitored.
This Action1 query can help to assess your endpoints for vendor account usage. You have to provide a list of vendor account names in order to check their usage and then verify the usage timeframes.
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Related Alerts and Reports:
8.1.1: Assign Unique User IDs
All users must be assigned a unique ID before granting them access to cardholder data
8.1.2: Management of User IDs
Control addition, deletion, and modification of user ID, credentials and other identifier objects
8.1.3: Revoke Access for Terminated Employees
Ensure that any terminated users lose their access to corporate systems
8.1.4: Inactive User Accounts
Remove or disable user accounts that have been inactive for over 90 days
8.1.6: Account Lockouts
Limit multiple invalid login attempts by locking out the user ID after 6 attempts
8.1.7: Account Lockout Duration
The lockout duration must be at least 30 minutes or until re-enabled by administrator
8.1.8: Idle Sessions
Require user re-authentication after a session has been idle for more than 15 minutes
Keywords: Enable third-party vendor accounts only when needed and monitor when in use,Action1 8.1.5: Third Party Accounts.
Find more information on 8.1.5: Third Party Accounts at Microsoft TechNet.