In General Security we have new options like,
1. Configure Managed Accounts. :- The service accounts used in SP 2010 are registered or we can register them manually before using the Account for a service.
When you Edit or Add a User account, you will get below options.
2. Configure password Change settings. :- In SP 2010 we have an option to change/reset service account passwords either Manual or Automatic selection. In either ways SharePoint will send notification email to User or Group of Users as configured in this setting.
3. Manage WebPart Security. :- This is quite Self Explanatory.
4. Configure Secure Token Service. :- Not exactly sure about this token service, but surely its related to other Applications and FARM’s who can use this (.svc) URL as endpoints for communication between them.
5. Manage Trust. :- It gives a message “There are no Trusted Identity Providers defined.”
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