A few weeks ago, UBS employee Kweku Adoboli (universally described as a "rogue trader") ran up a $2 billion loss
for his employer; many readers wondered how it is the systems which allow trades to happen at all aren't better tuned to catch such massive cash flows without triggering alerts. Now, reader
DMandPenfold submits a report from Computerworld UK in which the bank claims that such triggers were in place — they were simply not acted on
. From the article: "UBS has insisted its IT systems did detect unusual and unauthorised trading activity, Interim chief executive Sergio Ermotti, who is running the company following Oswald Grubel's resignation last month, sent a memo to employees saying the bank is aware that its systems did detect the rogue activity. In the memo, Ermotti wrote: 'Our internal investigation indicates that risk and operational systems did detect unauthorised or unexplained activity but this was not sufficiently investigated nor was appropriate action taken to ensure existing controls were enforced.'"