Researchers from Australia have published a new paper indicating that forensic tasks will be a lot more difficult on solid-state drives than it is on standard hard drives. Routines built into the drive hardware to clean up unused space will alter data, without any human intervention at all. Worse yet, tools like “write blockers” are ineffective because the actions are internal to the drive and not initiated from the outside.
Evidence gathering is going to be a lot tougher until some new tools are developed.