The project was started in response to the Church of Scientology's attempts to remove material from a highly publicized interview with Scientologist Tom Cruise from the Internet in January 2008.
Project Chanology began its campaign by organizing and delivering a series of denial-of-service attacks against Scientology websites. The group was successful in taking down local and global Scientology websites intermittently from January 18, 2008 until at least January 25, 2008.
DDoS (distributed denial-of-service)
is a type of electronic civil disobedience (also called a virtual sit-in) attempting to make a website or network unusable by flooding it with traffic.