Black magic has never been proven to exist in a scientific environment, and several purported magicians have been debunked. When an occurrence is attributed to the power of black magic, it may be a coincidence rather than a direct cause.
Black magic, as with all magic, is not corroborated by scientific evidence. On several occasions, large amounts of money have been offered to those who can successfully execute a magic trick without any possible scientific explanation. So far, all those who have attempted to claim this prize have been exposed as frauds.
Many people retain a belief in black magic. These people generally believe in black magic as part of a traditional cultural belief or in the form of a rationalised redefinition of black magic intended to avoid a direct collision with the scientific method.