Tresys File Sanitization (XD Air)


Unique Mobile Media Protection


Tresys File Sanitization (XD Air)

As new and more sophisticated cyber attacks evolve, mobile devices are becoming a popular threat vector. XD Air [USG program name FiST] provides unique mobile media protection by ONLY allowing trusted content to be shared. Using a kiosk based solution, XD Air inspects, filters and cleans data on your device, making it safe to use, even in the most sensitive networks.


XD Air was developed under the USG program name of FiST in response to the highly publicized USB “thumb drive” threat in November 2008. As a result, USB devices have been restricted or even banned in critical environments. However, these drives were widely used to share vital information between users, partners and applications so the need for a solution was evident.


Key Features include:


  • Laptop-based Kiosk · Built for a COTS 64 bit platform to support rapid deployment and mobile operations. Appliance-like functionality minimizes user error.
  • Isolated environments · Uses SELinux and Tresys VM Fortress to positively isolate the “dirty” side of the application from the “clean” side where sanitized files are stored.


Isolation ensures:


  • Safe handling of virus and malware infected files
  • Secure device erasure
  • Strong transactional separation
  • Adaptable filters · Provide state of the art identification of advanced malware and viruses and integrates new filters as other attacks are identified in the future. Filtering features include the following:
  • Detect virus or malware infected files
  • Clean and verify files are cleansed
  • Remove unknown file types
  • Remove steganography
  • Analyze, remove, and cleanse embedded objects
  • Remove or cleanse color or size obfuscated text
  • Remove macros from documents
  • Remove or cleanse metadata
  • Remove unrecognized data
  • Validate file formats
  • Hidden content identification and cleansing
  • Forensic capability · Stores “dirty” data in controlled and isolated environment for forensic analysis; critical in threat detection to adapt XD Air to evolving attacks.
  • File Types · XD Air supports many file types, including the following:
      Microsoft® Office (97-2007)

      • Word (.doc, .docx, .docm)
      • Excel (.xls, .xlsx, .xlsm)
      • PowerPoint® (.ppt, pptx, .pptm)
      Text and Presentation Files

      • ASCII text files (.txt)
      • Portable Document Format (.pdf)
      Compressed Files

      • BWT zip (.bz2)
      • UNIX tar (.tar)
      • Pkzip (.zip)
      • GNU zip (.gz)


    Image Files

    • Joint Photographic Experts Group (.jpg, .jpeg)
    • Windows® Bitmap (.bmp)
    • Tagged Image Format (.tif, .tiff)
    • Windows® Metafile (.wmf)
    • Windows® Enhanced Metafile (.emf)
    • Graphics Interchange Format (.gif)
    • Portable Network Graphics (.png)


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