1. A computer system for changing a password, the computer system comprising: one or more computer processors, one or more computer readable storage media, and program instructions stored on the one or more computer readable storage media for execution by at least one of the one or more processors, the program instructions comprising: program instructions to identify a resource protected by a password; program instructions to discover at least one information source containing information relevant to a process for changing the password of the resource, wherein the at least one information source is unstructured information, wherein program instructions to discover the at least one information source containing information relevant to the process for changing the password of the resource includes program instructions to perform text analytics on the text of the at least one information source; program instructions to construct a set of procedures to change the password using the information relevant to the process for changing the password, wherein program instructions to construct the set of procedures comprise: program instructions to analyze the at least one information source; program instructions to extract the information relevant to the process for changing the password from the at least one information source; and program instructions to construct the set of procedures to change the password using the information relevant to the process for changing the password; program instructions to receive an indication of a date upon which the password of the resource is set to expire; program instructions to store the set of procedures to change the password of the resource; subsequent to storing the set of procedures to change the password of the resource, program instructions to receive a request to modify the password of the resource; program instructions to retrieve the stored set of procedures to change the password of the resource; and program instructions to alter the password of the resource according to the stored set of procedures, wherein altering the password of the resource according to the constructed set of procedures occurs on or before the date upon which the password of the resource is set to expire, and wherein altering the password of the resource according to the stored set of procedures is further based on a predefined set of rules, wherein the predefined set of rules specify how the password is to be altered.