Last month, the Securities and Exchange Commission filed a complaint in the U.S. District Court for the Southern District of New York against a UK resident, Idris Mustapha, for allegedly hacking into brokerage accounts of U.S. customers and making unauthorized stock trades from the other investors’ accounts.  In its statement announcing the case, the SEC said that “[w]e will swiftly track down hackers who prey on investors ... no matter where they are operating from and no matter how sophisticated their technology.”  The complaint serves as another sign of the SEC’s increasingly active role in policing cybersecurity.