Google Inc. (NASDAQ: GOOG) has had a good time recently nipping at the heels of what many consider its largest enemy -- Microsoft (NASDAQ: MSFT). While I'm not agreeing that Microsoft is in Google's direct cross-hairs more than other companies, the area of customer security and privacy is one area where both companies have taken potshots at one another recently. Google has taken criticism for the immense privacy breaches it apparently is making available to the world, while Microsoft's Windows operating system and other software constantly have security issues, from malware to spyware.

Google recently posted an entry to its security blog that lists the most common web servers that are used to host malware, which then gets distributed to consumer PCs -- turning them into "zombies" for illegal online activity. Yes, you guessed it -- Microsoft's Internet Information Server (IIS) was listed along with the Apache web server (which runs the free Linux operating system) as responsible for distributing 49% of all malware on the internet. You probably know malware -- it's what is responsible for those annoying popups on many millions of PCs, and it generally slows down a PC significantly or crashes it altogether.

Now, to be fair, Google did list the open-source Apache web server as responsible for hosting and distributing malware on the internet as well, so I don't think this was a direct attack on Microsoft, but more as a statement of fact.

But, Google did take its analysis further and determined that Microsoft's server software was actually responsible for distributing malware twice as much as the Apache web server software. While this will not come as a surprise to many IT professionals, it seems that Google could have a motive of undermining trust in Microsoft's products by using published research and analysis showing weakness. Well, it's free to do that, and perhaps Microsoft could turn the tables on Google and point out weakness in the company's software -- except that Google does not make software for web servers.