Windows 7 Ultimate has BitLocker Drive Encryption built in. Its default encryption method is AES 128-bit with Diffuser. You can configure other encryption methods — see How to change BitLocker Drive Encryption method and cipher strength in Windows 7 for details.
Can Windows 7 be encrypted?
Encrypting File System (EFS) is a feature of Windows that you can use to store sensitive information on your hard disk in an encrypted format. Encryption is the strongest protection that Windows provides to help you keep your information secure.
How can I tell if Windows 7 is encrypted?
BitLocker encryption software for Windows 7-based laptops
- Click the Start button and click “Control Panel”.
- Click “System and Security”.
- Click on “BitLocker Drive Encryption”.
- The BitLocker encryption status will be shown for each hard drive (typically 1 in a laptop, as shown below).