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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.
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When you Edit or Add a User account, you will get below options.
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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.
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3. Manage WebPart Security. :- This is quite Self Explanatory.
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5. Manage Trust. :- It gives a message “There are no Trusted Identity Providers defined.”
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