BitLocker

BitLocker is a massive, incredibly dominant, and entirely ubiquitous Full Disk Encryption (FDE) feature built natively into the professional and enterprise editions of the Microsoft Windows operating system. Because it is pre-installed on hundreds of millions of corporate laptops globally, it is the absolute default encryption standard for the vast majority of the Fortune 500. When a massive corporation purchases a fleet of Dell or Lenovo laptops, the IT department simply activates BitLocker via Group Policy, instantly securing the corporate data if the laptop is stolen out of an employee's car. The core strength of BitLocker is its flawless, native integration with the Windows OS and the physical hardware of the laptop, specifically the Trusted Platform Module (TPM) chip on the motherboard. When the laptop boots, BitLocker queries the TPM chip to verify that the core boot files have not been maliciously altered by a rootkit. If the hardware is secure, BitLocker automatically unlocks the hard drive, providing a completely seamless, invisible experience for the employee (who doesn't even have to type an encryption password, just their normal Windows login). For enterprise IT management, BitLocker is heavily controlled via Microsoft Active Directory and Microsoft Intune. If an employee forgets their PIN or the TPM chip locks the drive due to a suspected attack, the massive, highly complex recovery key is automatically backed up in the central Active Directory server, allowing the IT Help Desk to easily recover the data. For organizations running a massive Windows fleet, BitLocker provides highly secure, entirely free (included in the OS license) enterprise encryption.