A large scale cyber attack has hit websites of HSBC. Million of customers around the world have been left without access to online services for at least 7 hours. The DDoS attack has been launched on Thursday evening. At the same time the US financial group Capital 1 was also hit by a similar type of cyberattack. According to HSBC, customers'data have not been affected by this incident. The most important for all firms being victims of such attacks is to ensure business continuity.