Security Basics mailing list archives
Re: Deny access to copy files
From: Aaron Howell <aaron_howell () ngenuity-is com>
Date: Mon, 02 Jun 2008 17:49:21 -0700
All of the solutions mentioned so far are fine. They do not, however, address the underlying problem here, which a few others have mentioned. If you don't trust your programmers, why are they working for you? What is going to stop one of these evil programmers from copying the source by hand with pen and paper? What is going to stop them bringing a digital camera (or camera phone) and snapping pictures of the source code on the screen, and then re-typing it later, on an untrusted system? A good security policy, clearly stating what is and is not allowed, and strictly enforced, is the only way to accomplish your goal. You can put all the technical countermeasures in place, and still lose source code as someone carries it out the door in their briefcase. If you allow someone to work with the code, they are going to have access to it. Period. You can not scrub your code from their memory when they leave your building, how will you protect from that? Jon Kibler, in particular, makes some really good points about vetting your systems and people. In the end, you're still left with the fact that in order to work with the code, the developers need to be able to read the code. There is no way to be absolutely sure that this code won't walk out your door, so you need to focus on what to do WHEN it walks out the door. -- Aaron Howell nGenuity Information Services 509-396-2075 x6000 http://www.ngenuity-is.com Jon Kibler wrote:
Ahmed Khalid wrote: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.
Current thread:
- Deny access to copy files Ahmed Khalid (Jun 02)
- Re: Deny access to copy files Ansgar -59cobalt- Wiechers (Jun 02)
- RES: Deny access to copy files Gilberto Fernandes (Jun 02)
- RE: Deny access to copy files Craig Wright (Jun 03)
- Re: Deny access to copy files Jon Kibler (Jun 02)
- Re: Deny access to copy files MaddHatter (Jun 03)
- Re: Deny access to copy files Aaron Howell (Jun 03)
- Re: Deny access to copy files Andrew Becherer (Jun 02)
- Re: Deny access to copy files Shreyas Zare (Jun 02)
- Re: Deny access to copy files Kim Johnsson (Jun 02)
- RE: Deny access to copy files Jeff Dinger (Jun 02)
- Re: Deny access to copy files Ali, Saqib (Jun 02)
- RE: Deny access to copy files Fielder, Kevin (GE Money) (Jun 02)
- Re: Deny access to copy files Adam Pal (Jun 02)
- RE: Deny access to copy files Yahsodhan Deshpande (Jun 02)
- Re: Deny access to copy files Liam Jewell (Jun 03)
- RE: Deny access to copy files Craig Wright (Jun 03)
- RE: Deny access to copy files Yahsodhan Deshpande (Jun 02)
(Thread continues...)
- Re: Deny access to copy files Ansgar -59cobalt- Wiechers (Jun 02)