正在gmail里面收信收的不亦乐乎，结果突然就发现不能访问了。google给了这样的提示：

Lockdown in sector 4!

Our system indicates unusual usage of your account. In order to protect Gmail users from potentially harmful use of Gmail, this account has been disabled for up to 24 hours.

If you are using any third party software that interacts with your Gmail …