SEC Says It Told U.S. Security Officials of Hack Months Ago

By Elizabeth Dexheimer and Ben Bain, Bloomberg News

The U.S. Securities and Exchange Commission told government cybersecurity officials about a hack into its database of corporate filings soon after it happened last year, months before the agency’s new chairman made the breach public.

Since disclosing the incident on Sept. 20, Jay Clayton has come under mounting pressure to provide additional details about the 2016 intrusion into the SEC’s Edgar system that may have led to illicit trades. In remarks prepared for a Senate hearing on Tuesday, Clayton said the agency told the Department of Homeland Security’s U.S. Computer Emergency Readiness ...