A Canadian cybersecurity executive who held senior roles at several firms that help data-breach victims negotiate ransom payments has been charged in a federal hacking and data-extortion case. According to Sina Finance, court records show Edward Dubrovsky was also recently published a book on how to respond to cyber extortion, but he is now accused of conspiring to commit similar crimes by threatening to leak stolen and intruded data and using extortion to disrupt interstate commerce.

The indictment against Dubrovsky remains sealed. According to Sina Finance, federal records show the 54-year-old appeared in Philadelphia federal court on Thursday after his arrest, and Magistrate Judge Scott Reid ordered him transferred to the U.S. District Court for the Eastern District of Texas, where the case was filed. Prosecutors have asked that he be detained before trial, and the Texas case file remains sealed.

It is not yet clear whether the charges against Dubrovsky are related to a major hacking series disclosed by senior FBI officials on Friday morning, although the timing of the two cases appears to align.