Anonymous hacker groups claim responsibility for a DDOS cyber attack on HSBC Bank. RBS, Lloyds TSB and Barclays Banks are next targets. Group that calls itself Izz ad-Din Al Qassam also took responsibility for the assault on HSBC. The attack did not affect any customer data, but did prevent customers using HSBC online services, including Internet services, Anonymous tweeted on Friday. The group said it was holding back on its reason for the attack, but is debating whether to release them or not.
Source: https://thehackernews.com/2012/10/anonymous-hacker-claims-to-have-20000.html