It is one of the disasters of modern life—you finally come up with a memorable(难忘的)and safe password for your computer,but a few months later you’re told that it has expired and you have to find a new one.But now Britain’s security services say that it may be safer not to keep changing passwords.According to experts at CESG,the more of- It is one of the disasters of modern life-you finally come up with a memorable (memorable) and safe password for your computer, but a few months later you you told that it has expired and you have to find a new one. But now Britain’s security services say that it may be safer not to keep changing passwords.According to experts at CESG, the more of-