HSBC has confirmed that it suffered a cyber attack that took down several of the bank’s websites around the world.The company was hit by a denial-of-service (DoS) attack, which prevented customers from being able to access to its websites and use online banking services. The attack, however, “did not affect any customer data”, HSBC said in a statement.“We are taking appropriate action, working hard to restore service. We are pleased to say that some sites are now back up and running,” the bank said. “We are cooperating with the relevant authorities and will cooperate with other organisations that have been similarly affected by such criminal acts.”HSBC did not provide any information about who might be responsible, but a group with links to the hacking collective known as Anonymous took credit for the attack on Pastebin and Twitter.There’s no word on whether customers of HSBC Bank Bermuda were affected.“We apologise for any inconvenience caused to our customers throughout the world,” the company said.