While both Satanism and Luciferianism share the same association with the Christian term “the Devil”, Luciferians regard themselves as separate from the Satanists.
Since the start of Christianity, the Christian church has accused various groups and individuals of worshipping the ultimate evil. During the Middle Ages there were full-blown witch-hunts and those interrogated where often forced to admit associations with the Devil under horrific torture.
The basic beliefs of a Satanist.
Satanism: The Basics
Keep in mind that Satanism is a highly personal and individualistic religion/philosophy and should you ask 100 Satanists about what Satanism is, you would probably get 150 replies. This is what I have discovered to ring true with most Satanists though.