KSW stands for Keeping Scientology Working, a policy letter written in 1965 by L. Ron Hubbard, Scientology’s founder. In the letter, Hubbard outlined 10 steps to ensure survival of the Scientology movement. He urges Scientologists to eradicate what he called "incorrect technology", i.e. altered Scientology practices.
"We have some time since passed the point of achieving uniformly workable technology. The only thing now is getting the technology applied. If you can’t get the technology applied then you can’t deliver what’s promised. It’s as simple as that. If you can get the technology applied, you can deliver what’s promised."
KSW is also the title of a series of Scientology texts by L. Ron Hubbard to make sure that Scientology is not being abused.