In recent years, there have been numerous reports of confidential data being exposed through lost USB drives. These reports have brought the problem of USB security to light. As common portable storage device users, malware fud we are gradually aware of the importance to enhance USB security. USB Encryption software which can allow us to lock USB drive with password is one of the best options. It can prevent sensitive information on it from getting into the wrong hands even he gets physical access to our devices

Following I will introduce you 3 Free USB encryption software.

Truecrypt

TrueCrypt is open-source disk encryption software. It can create a virtual encrypted disk within a file and mount it as a real disk, or an entire hard disk partition or a device, such as memory stick, floppy disk, etc. AES-256, Blowfish (448-bit key), CAST5, Serpent, Triple DES, and Twofish are the encryption algorithms it uses to secure data.

Truecrypt is the most popular free encryption software. To lock USB stick with this freeware, you need to take some time to understand how it works firstly. The problem with Truecrypt for your encryption is that you need to have administrator privileges on the computer in which you're plugging your locked device into.

FreeOTFE

FreeOTFE is a free encryption program that can be used for USB stick and PCs. With this encryption application, you can create encrypted volumes, virtual disks or entire partitions using AES, Blowfish, Serpent, Twofish encryption algorithms. These disks operate exactly like a normal disk, with the exception that anything written to one of them is transparently, and securely, encrypted before being stored on your computer's hard drive.

Rohos Mini Drive

Rohos Mini Drive is a free program that allows you to create an encrypted partition on the USB flash drive. The software doesn't require administrator privileges to open the encrypted USB drive partition on a guest computer. Basically, Rohos Mini Drive is good free encryption software to lock USB drive. One of the weak points is that its encryption size is limited to 2 GB. You cannot encrypt a partition of more than 2 GB.

I believe that all these free USB encryption software can be helpful. But when you want portable and easy-to-use encryption software or just a commercial one with strong encryption, I personally recommend you to try Wondershare USB Drive Encryption.

Wondershare USB Drive Encryption is a professional USB encryption tool to lock USB drives and other portable storage devices with password so as to protect your confidential data. Its US military-level 256-bit AES encryption can guarantee the highest security for your business and personal data. To protect USB drive with it, just create a password protected secure area in 2 simple steps, and then drag and drop files you want to protect into it. The secure area can be made hidden to get more protection. This USB encryption software is portable, and you can view your files on the protected USB drive in any computer without USB Drive Encryption.