Bing Masking MSNBot As Internet Explorer or a Rogue Bot?

Feb 22, 2010 • 8:46 am | comments (1) by twitter Google+ | Filed Under Bing Search

A Bing Community thread reports from one webmaster that someone is masking MSNBot around as a browser, either Internet Explorer or Mozilla Firefox. Here are the reported IPs and UserAgent's being reporting by this webmaster:

The following IP addresses are from MSN's search bots, but use what appears to be just normal user agents.

The user agent looks like this "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SLCC1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.30729; .NET CLR 3.5.30729; InfoPath.2)"

This is not the first time Microsoft Bing has been accused of masking their bots as browser useragents. We had a similar report back in September where MSNBot was using Mozilla by way of UserAgent.

Brett Yount, Bing's representative, said, "Could you send this information to and I will have the crawling team investigate?"

So currently, this is not confirmed, but it is weird.

Forum discussion at Bing Community.

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