Malware reunion describes the situation when a computer virus or other malware sends junk mail to recipients on your contact list and that results in a correspondence between you and someone on your contact list with whom you have not communicated in a long time. In this sense, the malware does do a good thing by unintentionally leading to this reunion.

Malware reunion说的是这样一个情景：你电脑中的某个病毒或恶意程序向你邮箱的联系人发送垃圾邮件，而这个垃圾邮件使得你跟好久没有联系的某个人又开始通信联系。我们可以称之为“因病毒重聚”。在这种情况下，恶意程序因为无意中促成了一次重聚，反而做了件好事。

For example:

比如以下这两封邮件：

Email 1: Mike? It's me Sheila from law school - long time no speak! I think you have a virus on your computer because I'm getting spam from you. Anyways - how is life going - where are you working?

电邮1：迈克？我是你法学院的同学希拉，好久没联系了！我觉得你电脑可能中病毒了，因为我收到了你发来的垃圾邮件。不过，你过得怎么样？现在在哪里工作？

Email 2: Hi Sheila - good to hear from you and sorry about the spam - what a nice malware reunion! I started my own practice a year ago. Where are you working?

电邮2：你好，希拉！很高兴收到你的信，很抱歉让你被垃圾邮件骚扰。这可真是因病毒重聚啊！我一年前开始自己执业了。你在哪里上班呢？