Mark your calendars, cyber-enthusiasts.

The federal judge overseeing a half dozen class action lawsuits targeting Facebook Inc. with claims related to a data breach affecting 50 million users has asked the lawyers in the case to give him a tutorial on data breaches, the dark web and all things cyber-related.

U.S. District Judge William Alsup of the Northern District of California, who makes a regular habit of asking lawyers in highly technical cases to help him get up to speed on the underlying technology, has asked for a tutorial in the Facebook cases in his San Francisco courtroom on Jan. 9 of next year. Alsup is giving each side one hour to present information on “the subject of data privacy and the technology used to both protect and attack it.”