A backup or storage management system is provided that can secure data within a primary storage environment that stores data in an unsecured format. The storage management system can automatically analyze data received for backup from the primary storage environment and determine whether the data includes information that has been identified as sensitive and/or information that is determined within a threshold degree of probability to be sensitive. The storage management system can then modify the storage of the data that includes sensitive information at the primary storage environment, thereby enabling the data to be secured within the unsecured, or partially secured, primary storage environment. Advantageously, in certain embodiments, by securing data with sensitive information within an unsecured storage environment, embodiments disclosed herein can reduce the occurrences of a data breach or data leak.