The former chief information officer of a division at Equifax has been charged with insider trading stemming from stock sales he made following a massive data breach, according to the U.S. Securities and Exchange Commission.

Byung J. “BJay” Pak, U.S. attorney for the Northern District of Georgia in Atlanta, has filed criminal charges against Jun Ying, who was in line to be the Atlanta-based credit bureau’s next global chief information officer when the Atlanta-based company was hacked last year, the SEC announced Wednesday.