All your personal data is on your laptop, but your company now says you need to switch to a new laptop. Or your laptop is getting old and it's time to donate it to a local charity. Getting rid of the hardware is easy, but what should you do to erase all information so future users do not have access to your personal stuff? Computers are so much complicated than they were ten years ago, and with more storage space, they are prone to be havens for private photos, personal messages, and secret financial data. But instead of the obvious...