London Stock Exchange problem was network change mix up
Except the same kind of problem happened in the early 2000's (test systems being pointed at production systems). You would have thought they had learned from that earlier episode. Evidently not.
The two-hour disruption experienced by the London Stock Exchange's Turquoise multilateral trading facility (MTF) this week was the result of an error by a contractor when making a small network change, according to a source close to the company.
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