The Design and Realization of Secure Mail System Based on Ukey;

以数字方式签署邮件，以保证邮件发送的安全性。

youdao

This design presents a reasonably secure system; as long as each voting user has one and only one acceptable E-mail account, there is reasonable assurance that users could not vote twice.

这种设计可以得到一个比较安全的系统；条件是每个投票的用户都有且只有一个可以接受的电子邮件帐号，这样就可以保证每个用户都不会投两次票。

youdao

Secure E-mail: Viruses and other malicious software that might be hiding in your email can't break out of the sandbox and can't infect your real system.

安全电子邮件病毒和其他恶意软件可能隐藏在您的电子邮件无法打破的沙箱，无法感染你真实的系统。

youdao

"We urgently need to start reinforcing the system that is currently used to authenticate and identify secure websites and e-mail systems, " said Mr Eckersley.

BBC: Iran accused in 'dire' net security attack