Back in June 2014, CNBC reported on an extraordinary cyber attack on a large hedge fund. According to an executive at BAE Systems, hackers used a tactic called โ€œspear phishingโ€ to trick hedge fund employees into opening e-mails that secretly installed malware on the hedge fund’s servers. The BAE executive said that the hackers then built a lag into the hedge firm’s order-entry system that exposed the hedge fund’s proprietary strategy to the intruders, allowing them to “replicate it, trade ahead of it, trade around it, et ceteraโ€ to make significant trading profits.