According to Britain's National Cyber Security Center - you should stop using common band names like Metallica,Slipknot, Blink-182 and Foo Fighters in your passwords. One British cyber security official says,"Nobody should protect sensitive data with something that can be guessed, like their first name, local football team or favorite band."
Their 'frequently hacked' list also includes fictional characters like Superman, Batman, Tigger, and Pokemon . . . plus common names and simple passwords like "password" and "123456".
They put together 100,000 passwords that are easily hacked which you can check out HERE.