24.
In addition to copyrighted files, other types of illicit content have been uploaded onto the Megaupload.com servers, including child pornography and terrorism propaganda videos. Members of the Conspiracy have indicated to each other that they can automatically identify and delete such materials on all of their servers by calculating MD5 hash values of known child pornography or other illicit content, searching the system for these values, and eliminating them; in fact, such files with matching hash values have been deleted from the MegaConspiracys servers. Members of the Mega Conspiracy have failed to implement a similar program to actually delete or terminate access to copyright infringing content.
Direct quote from the indictment.
(Note the use of "Mega Conspiracy" too)