在网上发邮件安全吗?如果你点头那就错了,网上的消息其实类似校园的大广播,只要是有心人都能收听到,多么可怕!从邮件客户端程序发送到邮件服务器的邮件数据实际上就是纯粹的文本数据,从技术角度来说,要想偷窥一下他人的邮件简直不费吹灰之力——在任何网关或邮件服务器,都可轻松截获邮件(比如使用sniffer)。不安好心的人还是极少数,但非常机密和隐私的信息怎么办?我们需要手机式的安全:发送者用手机号码拨打手机,而接收者只能自己接受。让我们请出PGP来保护隐私,拒绝信息泄漏吧。 Is it safe to send e-mail over the Internet? If you nod, it’s wrong. The online news is actually similar to the campus radio. As long as it is well-intentioned, the e-mail can be heard from the e-mail client. It’s purely textual data, and technically speaking, it’s easy to peek at other people’s mail - it’s easy to intercept mail (such as using sniffer) on any gateway or mail server. We are in need of cellphone-type security: the sender dials the cellphone from his cellphone number, and the receiver can only accept it himself. Let’s request PGP to protect privacy and reject information leakage.