Answer: No evil forces exist in nature, except for ourselves. No Satan (adversary), no angels and no demons exist. In Kabbalah, these terms refer to egoistic forces, no more than this.
Everything depends only on the person because people include the entire world within themselves, and if they rise to the level of the completion of correction, then no one can harm them.
However, people who don’t correctly understand the Kabbalistic sources begin to invent demons, vampires, and other evil spirits. Much time is needed to cleanse our minds of fantasies, ideas, and thoughts like these. All of these are egoistic forces within us that we must correct.
From the Kabbalah Lesson in Russian 10/11/15