The software records password hashes in a data store, receives
					a hash of a password from a client, and compares the supplied hash to the hash
					obtained from the data store. Some authentication mechanisms rely on the client to generate the hash for
						a password, possibly to reduce load on the server or avoid sending the
						password across the network. However, when the client is used to generate
						the hash, an attacker can bypass the authentication by obtaining a copy of
						the hash, e.g. by using SQL injection to compromise a database of
						authentication credentials, or by exploiting an information exposure. The
						attacker could then use a modified client to replay the stolen hash without
						having knowledge of the original password.As a result, the server-side comparison against a client-side hash does
						not provide any more security than the use of passwords without hashing.