MySQL String Shredding

Question

I know how to delete files to make them impossible to recover. But how to delete rows from a MySQL table in a POSIX environment so that it produces the same results? I am currently rewriting all data with a null string with the same length as the original data before proceeding to delete the row. It works? If not, how do I get it to work?

Answer 1

I doubt that you can do it in such a way that you can safely say that the original data has completely disappeared.

Take a look at this analysis, which includes a case study of MySQL preservation;

http://forensics.umass.edu/pubs/stahlberg07forensicDB.pdf