> And. No. I can't have backups of that data because having > a backup would be the same as not really deleting it. > Think of retroactively altering the ba

> And. No. I can't have backups of that data because having > a backup would be the same as not really deleting it. > Think of retroactively altering the backups of the days > where the data still existed shudder. I think this is very interesting technical problem. Can anyone shed some light on currently available solutions and approaches?