1. A method comprises: processing a data retrieval request that identifies data, wherein the data is stored in dispersed storage memory as a plurality of sets of encoded data slices, wherein one or more encoded data slices of the plurality of sets of encoded data slices has been replaced with one or more encoded secret slices, and wherein the one or more encoded secret data slices represents secret data; receiving, in response to the processing the data retrieval request, at least a threshold number of the plurality of sets of encoded data slices; determining whether a secret data extraction process is initiated; and when the secret data extraction process is initiated: obtaining an inter-dispersing function to extract the one or more encoded secret slices from the plurality of sets of encoded data slices to produce extracted encoded secret slices; and decoding the extracted encoded secret slices in accordance with secret dispersed storage error encoding parameters to reproduce the secret data.