Windows 8 offers a number of security improvements, but the most appealing for SMBs might be BitLocker. BitLocker's hard-drive encryption isn't new, but Windows 8 makes it more accessible for SMBs. That's because it's now included with Windows 8 Professional, the entry-level business edition. (BitLocker was limited to Ultimate and Enterprise editions in Vista and Windows 7.) That's particularly useful for the smaller companies that are unlikely to deploy the enterprise version of Windows. In short, BitLocker enables users to encrypt all of the data stored on the hard drive, reducing the risks associated with losing a business laptop or other hardware. BitLocker To Go offers similar protection for USB drives and other removable storage media.