Tracing an ad attack

The folks at MacHouse have posted a nicely detailed analysis of the steps they went through to track down the origins of a malicious banner ad they found on their own website. MacHouse traced a malicious flash ad through a chain of advertising resellers, and to a company that hadn’t known its own ad had been stolen and co-opted.
The detective work involved is illuminating reading, particularly for any website owners concerned about potentially malicious ads.

Thanks to Sandi at Spyware Sucks for the link!