The SEC disclosed a 2016 data breach that might have given intruders access to nonpublic information for illegal trading. The breach was discovered and addressed at some unspecified time in 2016. It wasn’t until August 2017 that the SEC learned that the incident might have allowed the intruders to profit illegally through trading, the SEC said. The lack of details surrounding the 2016 breach incident has resulted in some speculation over what might have happened and the true extent of the compromise. The incident is the second one involving unauthorized access or misuse of its systems this year.”]