This matter was mentioned on this board before. This is a follow-up to show that the system is not corrupt, and the regulators do catch and punish the transgressors, and further, that in this case the transgressor has improved internal controls so that such criminal behaviour does not go undetected. 

Its not always easy for institutions and regulators to stay one step ahead of criminal behaviour.

https://www.thestar.com/news/world/2017/02/27/manulife-admits-it-was-bank-fined-12-million-by-canadas-money-laundering-watchdog.html