The Evil Eye
[Link]: "There is another concept of 'why bad things happen' that probably predates the theory that there is one centralized source of evil. This is, to use a computer anology, a peer-to-peer theory of evil. The evil eye is a widespread belief that unlucky events can ensue if you attract the attention of particular people. These people, sometimes involuntarily, sometimes voluntarily, can cast a malignant spell on others simply by looking at them."