I know it was the rating agency that gave the OK to businesses that in reality gave fraudulent details in the 2008 economic meltdown. These particular banks have taken more risk under the policies of the Federal Conservatives and the Bank of Canada which has kept interest low and consumer debt at record levels…
http://www.cbc.ca/news/business/story/2013/01/28/business-moodys-downgrades-banks.html
Here is the original concern
http://www.thestar.com/company/2012/ten/26/moodys_puts_canadian_banks_on_downgrade_watch.html