5,300 Wells Fargo employees fired over 2 million phony accounts

If you think that having an account with a large financial institution is a good idea, you may want to reconsider.

On Thursday, federal regulators said Wells Fargo employees secretly created millions of unauthorized bank and credit card accounts -- without their customers knowing it -- since 2011.

The phony accounts earned the bank unwarranted fees and allowed Wells Fargo employees to boost their sales figures and make more money.

"Wells Fargo employees secretly opened unauthorized accounts to hit sales targets and receive bonuses," Richard Cordray, director of the Consumer Financial Protection Bureau, said in a statement.

Wells Fargo confirmed to CNNMoney that it had fired 5,300 employees over the last few years related to the shady behavior. Employees went so far as to create phony PIN numbers and fake email addresses to enroll customers in online banking services, the CFPB said.

The scope of the scandal is shocking. An analysis conducted by a consulting firm hired by Wells Fargo concluded that bank employees opened over 1.5 million deposit accounts that may not have been authorized.

The way it worked was that employees moved funds from customers' existing accounts into newly-created ones without their knowledge or consent, regulators say. The CFPB described this practice as "widespread." Customers were being charged for insufficient funds or overdraft fees -- because there wasn't enough money in their original accounts.