U.S. prosecutors unsealed an indictment against the alleged hacker “Fxmsp” after his identity was revealed in a cybersecurity firm’s report. That sequence of events has highlighted the importance of information sharing as well as law enforcement’s reliance on private cybersecurity researchers. It raised questions about the line between serving the public good and a private firm’s bottom line. The Justice Department didn’t immediately respond to a request for comment about how Turchin might have known of the charges against him.”]