1.   Banks would notify the authorities when suspicious transactions occurred.

2.   A central tenet of banking is to know your customer, and banks are required to report certain suspicious transactions to regulators.

3.   Already, several dozen Federal Bureau of Investigation agents are poring over a dizzying list of suspicious transactions.

4.   Even if they were, new money laundering regulations now demand that bankers report suspicious transactions to legal authorities.

5.   Rep. Maxine Waters, D-Calif., said some U.S. banks have been involved in suspicious transactions with foreign institutions under investigation for money laundering.

6.   Several banks were fined in the last year, including Banco Ganadero and Banco Industrial Colombiano, for not reporting suspicious transactions.

7.   Several banks were fined last year, including Banco Ganadero and Banco Industrial Colombiano, for not reporting suspicious transactions.

8.   The banks are advised to watch carefully for any suspicious transactions on those accounts, like large, irregular wire transfers and dealings with secretive financial havens.

9.   To fight back, the online software vendors started developing computer models that identified suspicious transactions.

10.   U.S. banks and financial institutions must report suspicious monetary transactions.