原文链接：https://devblogs.microsoft.com/oldnewthing/20060412-09/?p=31563
(This is the first in a series of short posts on where Microsoft products got their names.)
（本文是一系列有关微软产品如何起名的小故事的第一篇。）
The original name for the malware protection service was “mpsvc” the “Microsoft Protection Service”, but it was discovered later that that filename was already used by malware! As a result, the name of the service had to be changed by sticking an “ms” in front, making it “msmpsvc.exe”. Therefore, technically, its name is the “Microsoft Microsoft Protection Service”. (This is, of course, not to be confused with “mpssvc.exe”, which is, I guess, the “Microsoft Protection Service Service”.)
恶意软件防护服务原来的服务名叫 mpsvc，是 Microsoft Protection Service 的缩写，结果后来我们发现，那个文件名居然已经被一款恶意软件给占掉了！于是乎，服务名称就得作出修改，而修改的方式就是在前面加上一个「ms」，使其变成了「msmpsvc.exe」。故而，技术上而言，msmpsvc 代表的是「微软微软防护服务」。（当然还是不要与 mpssvc.exe 混淆了，后者我估计是「微软防护服务服务」的缩写。）
Fortunately, the Marketing folks can attempt to recover by deciding that “msmpsvc” stands for “Microsoft Malware Protection Service”. But you and I will know what it really stands for.
幸运的是，营销人员们通过让「msmpsvc」代表「微软恶意软件防护服务」尝试挽回了损失，不过你我现在都知道它的本来含义了。