( January 13, 2023, 12:55 PM EST) -- WASHINGTON, D.C. — Citing a refusal by Covington & Burling LLP to disclose the names of 298 of its clients that were affected by a cyberattack, the Securities and Exchange Commission filed an application in District of Columbia federal court, seeking an order to show cause why the law firm should not be compelled to comply with an investigative subpoena by which the SEC says it wants to determine whether any material nonpublic information (MNPI) was compromised....