Re: Deny access to copy files

"Shreyas Zare" <[email protected]> Fri, 20 Jun 2008 15:00:58 +0530
Newsgroups gmane.comp.security.basics,gmane.comp.security.microsoft
Message-ID <[email protected]>
Hi,

Even if you have special COPY permission in NTFS, any user with READ
access will open the file and just use Save As to save it anywhere, or
just write a small code, possible in any programming language, to read
file and write a new file. So COPY thing is useless, MS is intelligent
enough.

Regards,

On Fri, Jun 20, 2008 at 12:39 AM, Michael P. Carter
<[email protected]> wrote:
>
> Also, the NTFS permission READ will allow anyone with that permission to
> also copy (the EXECUTE part allows them to launch the appropriate
> program to open the file), so the Windows permissions don't meet your
> security needs (it's something that we've been harassing Microsoft about
> for more than a decade - separate permissions for READ and COPY)).
>
> Michael P. Carter
> Network Manager
> [email protected]
> 562-498-6888
>
> -----Original Message-----
> From: [email protected] [mailto:[email protected]]
> On Behalf Of Atif Azim
> Sent: Wednesday, June 18, 2008 11:44 PM
> To: GSO GSO
> Cc: James Finnican; Kevin Ortloff; Ahmed Khalid;
> [email protected]; [email protected]
> Subject: Re: Deny access to copy files
>
> Indeed a technical control is not the only thing you should be looking
> forward to in such a scenario.First, you need to set your policies
> straight and results for non-compliance leading to consequences for
> leaking intellectual property. When looking forward to technical
> controls, checkout McAfee Data loss Prevention (DLP).It addresses
> issues related to source code leakage as well. Go to
>
> http://www.mcafee.com/us/enterprise/products/data_loss_prevention/data_l
> oss_prevention.html
>
> and also see the flash demo at
>
> http://www.mcafee.com/us/local_content/demos/dlp_technical_demo/dlp_flas
> h_demo.html
>
> Regards,
> Atif Azim
>
>
>
>
>
>
> On Wed, Jun 18, 2008 at 1:16 AM, GSO GSO <[email protected]> wrote:
> > DeviceLock is a great program.  Besides the very granular permission
> > levels, I have also like the fact I can create temporary access codes.
> >  So if an individual needs access to a USB device for an hour or even
> > a month, I can give it to them.
> >
> > B
> >
> > http://GovernmentSecurity.org
> >
> > On Tue, Jun 17, 2008 at 2:43 PM, James Finnican <[email protected]>
> wrote:
> >> DeviceLock and, disable access to the internet with exception to
> accepted resources, Wiki's subscribed sites. You can do this from IE
> directly or, configure it at the firewall if it allows.
> >>
> >> -----Original Message-----
> >> From: [email protected]
> [mailto:[email protected]] On Behalf Of Kevin Ortloff
> >> Sent: Friday, June 13, 2008 9:31 AM
> >> To: Ahmed Khalid; [email protected]
> >> Cc: [email protected]
> >> Subject: RE: Deny access to copy files
> >>
> >> If you don't mind spending a 2-3 thousand, there is a good product
> called ' DeviceLock '. This is a global policy enforcer that will
> restrict activates on USB, External Storage, etc, etc.. You can be very
> specific too like only a certain kind of thumb drive can be used by a
> particular individual ( this allows you to control who has the ability
> to even use an approved drive ). Or, maybe you only want read, but no
> write. You can do that too.
> >>
> >> Anyway, hope that helps. I'm sure there are other apps that can do
> this. I liked DeviceLock when I did my evals.
> >>
> >>
> >>
> >> -----Original Message-----
> >> From: [email protected]
> [mailto:[email protected]] On Behalf Of Ahmed Khalid
> >> Sent: Sunday, June 01, 2008 11:20 AM
> >> To: [email protected]
> >> Cc: [email protected]
> >> Subject: Deny access to copy files
> >>
> >> I am working for a software house, they are developing a software
> product and their requirement is to restrict programmers to take the
> code out of office premises due to company policy. I am trying to
> configure a windows based machine which denies access to copy files to
> external storage devices connected to USB. There is an NTFS permission
> "Read + Execute" I guess this could do the work but is there any other
> way to do it?
> >>
> >> They also don't need programmers to take the code with them in their
> email.
> >> I can restrict SMTP and POP ports but when it comes to web based
> emails I am clueless,  How can I restrict web based emails like hotmail,
> gmail, yahoo there are so many of these and if I somehow manage to block
> all web based email sites someone can write a script to send emails, if
> not a script HTTP tunneling would bypass any checks and bounds defined
> by my proxy/gateway machine. How can I block such thing?
> >>
> >> Any help would be highly appreciated.
> >>
> >> Regards,
> >> Ahmed Khalid
> >>
> >>
> >>
> >>
> >> This email, its contents and attachments contain information from j2
> Global Communications, Inc. and/or its affiliates which may be
> privileged, confidential or otherwise protected from disclosure. The
> information is intended to be for the addressee(s) only.  If you are not
> an addressee, any disclosure, copy, distribution, or use of the contents
> of this message is prohibited.  If you have received this email in error
> please notify the sender by reply e-mail and delete the original message
> and any copies. j2 Global Communications. 6922 Hollywood Blvd.,
> Hollywood, CA 90028.
> >>
> >
> >
> >
> > --
> > Security/Hacking Paper Contest Win $100
> > http://GovernmentSecurity.org
> >



--
("There are only 10 kinds of people in this world: those who know
binary and those who don't.")

Shreyas Zare
Co-Founder, Technitium
eMail: [email protected]

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