In recent posts, I have reported on some of the findings published in a paper I published with Dave Kleiman and Sundhar S. R. S [1]. We are working on a series of follow-up papers on the topic where we are using Spin-disk and SEM based techniques to map out what occurs in each bit cell as they are overwritten. Prof. Fred Cohen (the person who first made the term computer virus in the 80’s) has been coercing us to do this.