Sundeep is a physician, and he needs to upgrade his computers, but he's concerned that his current SSD drives won't be secure if he replaces them. Can he erase them securely? Leo says that's a genuine concern. While some claim there are erasers out there, Steve Gibson of GRC says SSD drive data is never really erased, just overwritten. That's why using whole drive encryption from the very beginning is key to protect that data. If he accesses the data on his smartphone, then he'll need to use the harder encryption, not just the simple 4 number code.