A lot of systems and service can invade Zhang date ascribe is insecure with impertinent password, some virus software and vermian virus can guess a simpler password.

• 很多系统和服务都可以侵入账号都归因于不安全和不恰当的密码,有些病毒软件和蠕虫病毒可以猜测出较简单的密码。