A report by Sophos claims that of the links they block leading to malicious poisoned results, leading to sites like payday loan sites, are much more likely to come from image search and Bing than Google and text based search.

Of the links blocked by Sophos, 65% of them were via Bing. Keep in mind, Google has a much larger market share, so 65% number is pretty wild here. Google only accounted for 30%, even with their market share.

Now, also keep in mind, 92% of all the blocked links were via image search and only 8% via normal text search.
I often see complaints about image search leading to malicious web sites but I didn't think Bing was this much worse than Google. I did know image search was worse than text search.
Forum discussion at WebmasterWorld.

Comments:
Steven Lockey
10/10/2012 01:13 pm
Doesn't surprise me to be honest. Google have been doing a lot of work to counter fake sites/malware sites, bing don't seem to be putting half the effort in, just advertising.
Milania
10/10/2012 05:12 pm
I have to commend Google in this area. Just yesterday, I clicked on an image in Bing search and got hit; I had to do a complete restore.