The Advanced Access Content System (AACS), the organization which controlled access to the HD DVD encryption key, sent a cease and desist letter to Digg on May 1, 2007. In its letter, AACS claimed that by publishing news articles on its website that reported on the encryption key, the website itself was engaging in illegal activity. Articles by numerous journalists reporting on the news story were posted to Digg. Jay Adelson, the CEO of Digg, announced that the website would abide by the AACS' requests and self-censor articles reporting on the encryption key.