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Guardian Portable encryption software protects your sensitive data on your USB flash drives with an easy to use drag and drop style AES256-bit encryption software, allowing users to easily protect files when transferring them from Windows, Mac or Linux based machines.



Turn your USB flash storage device into an encrypted vault with Guardian Portable encryption software.

Guardian Portable from CTWO Products is a portable software encryption tool that turns almost any USB flash drive into an encrypted data vault by password protecting and encrypting data as it is transferred from computer to device, this is a super low cost solution that makes use of user owned USB flash drives that maybe sitting around unused. Guardian Portable converts these drives into a secure vessel for your important and sensitive files.


Almost all USB flash drives can be used with the Guardian Portable software, to test the software with your own USB flash drive before purchasing, please download the 15 day free trial.


Guardian Portable is a CTWO products AB innovation, CTWO have been producing encryption solutions since 2007.

  • AES 256 bit in CBC-Mode – Military strength AES software encryption in CBC-mode, more secure than ECB.


  • Anti-Tampering – Password protection and anti-tampering techniques to ensure application integrity.


  • Regulatory Compliance – Where data encryption is an essential requirement for regulatory compliance, Safexs Guardian Portable offers the right protection for all data stored on portable devices.


  • Password Policy – A strong default password policy of 8 characters, 1 Uppercase (A), 1 Lowercase (a) and 1 Digit (1) to help users create a complex and secure password.


  • Brute-Force Protection – Prevent against password guessing attacks, Safexs Guardian Portable application resets after 10 failed password attempts.


  • Flash Drives Supported – Works on almost all makes and models of USB flash drives


  • Timer Lockdown – Protect against unauthorised access to your files, while you are away from your computer, the timer feature locks the Safexs Guardian application after a configurable period of time.


  • Available Storage Indicator – Available storage indicator shows how much space you have remaining on your Safexs Guardian drive, as well as the destination device.


  • Intuitive Interface – Quick to set-up and easy to use drag and drop interface, even for users with very little computer knowledge.


  • Cross Platform Support* – Safexs Guardian Portable runs on PC, Mac and Linux based operating systems, easily and securely through an easy to use GUI.


  • Developed in the EU – Designed in Sweden and developed within the EU, Safexs Guardian complies with existing and future EU Data Protection Directives.


*In versions prior and including Ubuntu 10.4 LTS and OpenSUSE 11.2 executing applications from removable devices was/is possible, unfortunately starting with Ubuntu 12.4 the manufacturers decided that its inconvenient for the user to see the message “Do you want to open as executable or to open this file with the appropriate application?” so they simply disabled being able to execute an application from a FAT32 formatted device, like all USB storage devices are.

One of our customers provided us with a workaround, but it doesn’t work for all customers, please visit our support centre and knowledge base.

Software Encryption


  • AES256-bit in CBC-mode
  • DSA signature (1024bit key length)
  • Hashing – HMAC-SHA256


Supported Languages


  • All major languages supported




  • A portable device
  • Windows 10, Windows 8.1, Windows 7, Windows Vista, Windows XP (SP2), 2000 (SP4)
  • Mac OSX 10.5+
  • openSUSE Linux 11.2 i586, Ubuntu 10.4 LTS


Please find the latest Guardian Portable data sheet available for download.