Re: secure file handling

From: Atom Powers (apowers_at_digipen.edu)
Date: 07/27/05

  • Next message: Fernando Gont: "RE: ICMP attacks against TCP: Conclusions" 
    Date: Wed, 27 Jul 2005 12:06:13 -0700
To: Alejandro Flores <alejandro.flores@triforsec.com.br>

    Alejandro Flores wrote:

    >Hello there,
    >
    >What's the best way to manage and store sensitive data (word documents,
    >text files, pictures...)? I mean, if I have a file with some sensitive
    >data, and I need to manage it and add content, etc...
    >
    Depending on how sensitive your documents are, you may need a Document
    Control System (DCS) with Mandatory Access Controls (MAC). These work on
    the file system to allow or deny access to files based on a set of
    rules. Unlike standard file permissions, some MAC systems can prevent
    data from being copied to less sensitive locations. But they can be very
    complicated to manage.
    There are many, some very expensive, DCS for MS Windows and the web
    (Plone, for instance). Windows can't do MAC, but other systems (FreeBSD
    5.3+ for example) can.

    >How can I manage
    >it in a way that no one can 'recover' my files or 'swap' files created
    >by programs like word?
    >
    You probably can't, unless you have Mandatory Access Controls in place.

    >Is an Encrypted File System the answer to my
    >question? :-)
    >
    >
    >
    Certainly not.
    Encrypted file systems, on MS Windows, will not prevent the data from
    being read or copied. And most uses of the data are unencrypted. MS
    Encrypted file systems will only protect your data if your disk drive is
    stolen; it will not protect your data while you are using your computer.

    >Regards,
    >Alejandro Flores
    >
    >
    >
    >

  • Next message: Fernando Gont: "RE: ICMP attacks against TCP: Conclusions"

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