03/21/2013 12:47 EDT

TD Bank Hit By Online Attack

FILE - In this Nov. 12, 2010 file photo, a sign for TD Bank is shown in New York. TD Bank Group has agreed to buy Chrysler Financial, the automaker's old lending arm, from private equity firm Cerberus Capital Management LP for $6.3 billion. (AP Photo/Mark Lennihan, file)

TD Bank suffered an online attack that affected its website and mobile app on Thursday, the Huffington Post Canada has confirmed.

The problem is affecting online and mobile customers in both Canada and the U.S., where TD has been ramping up its presence and uses the tag line "America's most convenient bank."

Customers who are affected see a "this webpage is not available message" when they try to log in online.

Spokeswoman Barbara Timmins said the bank is in the process of trying to fix the issue.

"We're doing plenty, we're working diligently," she said, adding she could not go into detail.

No customer accounts or data were compromised by the attack, a TD spokesperson wrote in an e-mail.

The e-mail from TD:

It’s a DDOS [ed note: Distributed denial of service attack] disruption, affecting online/mobile banking services. Access may be intermittent and we’re working to restore full service as soon as possible.

Customers can also call EasyLine and WebBroker, visit branches or use ATMs.

This is a service disruption only, no customer data/accounts compromised.

A DDOS attack is when hackers use a group of computers, sometimes numbering in the thousands, to attack a target such as a server or a site to bring it down.

Have you been affected? Let us know in the comments section below.

U.S. and Canadian outlets reported the attack earlier on Thursday.