Encrypt your main hard drive

PCs and Macs support full-disk encryption, which is a useful way to protect your data if your device is ever lost or stolen. On a Mac, enabling it is as simple as activating FileVault. On Windows, use Device Encryption or the more advanced BitLocker (which can also encrypt devices like removable USB drives). Phones and tablets generally have such encryption on by default so you don’t have to worry about it.