Account Security and Searches (and Maintenance Pages)
Searches are the gateway to the information that appears on maintenance pages. In general, account-related information is suppressed when a user doesn't have access rights to the account. This suppression is true for rows that directly reference an account AND for rows that indirectly reference an account. For example:
A user can only see bills associated with accounts to which they have access rights.
A user can only see financial transactions associated with service agreements that are, in turn, associated with accounts to which they have access rights.
Note: 
Person and premise searches are also impacted. Keep in mind that information will be suppress from both person and premise-oriented searches if the person / premise is related to accounts. Refer to Persons Can Also Be Secured for how access to person information is also restricted by account security. Refer to Premises Can Also Be Secured for how access to premise information is also restricted by account security.