There's really not much detail about the technology behind the scam in this article. Summary: intentionally proprietary and out-of-date software, oversized and

There's really not much detail about the technology behind the scam in this article. Summary: intentionally proprietary and out-of-date software, oversized and chaotic IT/IS department, AS/400, two disconnected trading systems, AS/400, lots of printing, AS/400, fake split/strike trades managed in Excel, AS/400, anyone who looked into the details would have smelled a rat, enough paper evidence to tax even the substantial computing capacity of a mighty AS/400.