Abstract: Account information is analyzed to identify accounts that have received deposits drawn on accounts associated with money service businesses. When such deposits are detected, other transaction data is analyzed to decide whether or not to categorize the account as suspected of being used for an illicit purpose such as money laundering. The analyzed information may include the number or percentage of deposits received drawn on accounts associated with money services businesses, the pattern of deposits and withdrawals into and from the account, and other information.

Abstract: Transaction data is analyzed according to one or more transaction rules to identify accounts that are suspected of being used for activity such as money laundering. The methods may be performed on an inquiry basis for ad hoc investigation of transaction activity relating to one or more particular account owners or other entities, or may be performed on an ongoing basis for monitoring transaction activity of one or more account owners or other entities for suspicious activity.