How to lose 465 million, Knight Capital report

This, perhaps, most painful bug report, which I have ever read. He colorfully describes the steps, which led to the loss 465 million dollars by Knight Capital due to software bug, which appeared last year and bankrupted the company. This report has all the characteristics of technical debt in a huge, deprived of support and running code base (the error occurred due to the execution of the code, which was not used by almost 9 years) and a terrible and sad story of interaction between software developers and IT professionals.