A system and method for data distribution against credential information leak are presented. A data block may be encrypted with block cryptograph on virtual storage so as to create an encrypted block. The virtual storage may be obtained by virtualizing one or more cloud storages of a storage area network (SAN). The encrypted block may be divided into one or more divided blocks. Store-blocks may be generated by combining divided blocks from the encrypted block and different encrypted blocks. The store-blocks may be stored in the one or more cloud storages.