To sanitize unclassified media, which action is NOT one of the acceptable methods?

To sanitize unclassified media, the method of transfer is not considered an acceptable method. The purpose of sanitization is to remove or obscure data to prevent unauthorized access or retrieval. Acceptable sanitization methods include purging, which involves degaussing or overwriting data so that it cannot be reconstructed; clearing, which ensures that data can no longer be accessed using standard methods; and destroying, which physically dismantles the media so that data retrieval is impossible.

Transfer implies moving data from one location to another without adequately sanitizing it, therefore it does not meet the criteria for ensuring that the data has been properly handled to prevent future access. This could result in data remnants being left behind, potentially exposing sensitive information. Thus, while purging, clearing, and destroying are designed to ensure complete data sanitization, transferring does not provide that level of security.