A security mechanism which enforces policy describing which requesters may perform operations on specified objects. There are typically multiple types of operations. Common operations include: read, write, execute, append, create, and delete.

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What is the practical difference between MAC and Capabilities

Both Mandatory Access Controls and Capabilities allow for fine grained privileges to be assigned to applications irrespective or in place of privileges inherited by the running user. Is there any ...
6
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2answers
830 views

How do I log everything a certain program is doing?

i have a program which is pretty simple. Its just a simple login form. Is there any possibility to log what this program is doing (maybe which file he is accessing and which website he is visiting ...
5
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3answers
3k views

Bell-LaPadula imlementation example

I'm currently studying the Bell-LaPadula model and i need to do an implementation as an example. I understand how the model works, but I have difficulties implementing it in a programming language ...
8
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1answer
207 views

What practical uses are there for the AD feature of “Confidential Attributes”

Are any applications (off the shelf, or internal) leveraging Active Directory's Confidential Attributes? Would you store sensitive information here such as a private key, or a salt here? I'm ...
6
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3answers
161 views

Requiring Authentication to Exit

I've often wondered why facilities do not require authentication as a default on exit. Beyond the oblivious reasons: Fire safety policies would require a panic mechanism to override the access ...
2
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1answer
2k views

BLP Lattice-structered system from Access Control Matrix

I've been reading a Computer Security book by Walliam Stallings and have found this example: http://i.imgur.com/5CAlc.png of an Access Control Matrix. Any example will do I just thought I'd screenshot ...
5
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1answer
843 views

Does Fedora 15 still use suid bits?

I heard that Fedora 15 will not use suid bits. Is that true? Is the suid bit a security design bug?
3
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2answers
251 views

Which access rights should be chosen for doku wiki?

I'm currently making my first experiences with a CMS called "DokuWiki" (Link). This CMS needs only PHP and writes the information to files (seems to be /dokuwiki/data/pages). At the moment I gave the ...
4
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1answer
4k views

Windows task manager can see all processes as non administrator without permission

On Windows Server 2008 R2 operating as a standard user, when I open Task Manager I can see all the processes from different users on the system. I have the option to click "Show all processes" which ...
8
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1answer
595 views

How to prepare for protecting identity after death?

In the context of online accounts and identities, what are some best practices to prepare for the one certainty we all face: not a one of us will get out alive.
3
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3answers
371 views

How do I clearly distinguish between groups of formal and informal models?

I'm currently studying for the CISSP exam and would like to ensure that I'm using proper terminology when referring to models. I'm a little confused because I'm coming across generic and specific ...
8
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1answer
298 views

What is a practical example of an action that violates the non-interference model?

I'm studying the non-interference model as part of CISSP prep and am having trouble thinking of a practical example where a violation would be involved (and the consequences of those violations). I ...
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2answers
1k views

What's the difference between an access control method, security model, and security policy?

(I should apologize in advance because this question is going to be messy -- I'll try to refine it as the subject becomes more clear to me). I'm studying for the CISSP exam and I'm getting confused ...
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2answers
140 views

Is it correct to consider audits as exclusively “detective” in nature?

I'm studying for the CISSP exam and one of the video lecture points didn't quite make sense to me. The instructor was discussing access control administration areas and began categorizing certain ...
4
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1answer
839 views

Is it correct to consider Task Based Access Control as a type of RBAC?

I'm studying for CISSP certification and one of the video lectures I viewed (CBT Nuggets) really confused me. Here are some excerpts from the lecture: "Role Based Access Control doesn't ...
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3answers
225 views

Different MySQL Users Security Benefits

Anyone with a brain cell knows that using a user that isn't root/dbo/etc adds a lot to security and how effective SQL injection attacks can be. I'm wondering if taking that idea a step further is a ...
5
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3answers
2k views

Why does the ★-property rule of the Bell-Lapadula Model allow information to be stored in objects with HIGHER sensitivity labels?

I'm self-studying for the CISSP exam and am having difficulty wrapping my mind around the practical side of the ★-property rule in the Bell-Lapadula Model. I understand the mechanics of it and that ...
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1answer
13k views

What is the difference between RBAC and DAC/ACL?

What are the benefits of each, and when should I choose one over the other? Are there situations where these should be merged? Do you have examples of common usages? And what about MAC, where ...
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3answers
1k views

Security Architecture - Settings to drive UI and Privileges (Rights) - Role-Based, per User-Account

How do large companies implement their security requirements which are centralized and used to drive things people can do (allowed to call a certain web-service, submit an order, etc.) as well as to ...
5
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1answer
641 views

access control to data-center using rfid

I don't know if "here" is the right place to make this kind of question... so here it is.. Is rfid a good solution for controlling access to a data-center? Because rfid is "wireless", is it ...
5
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1answer
1k views

Clark Wilson Integrity Model: Rules

What is the conceptual difference between certification rules and enforcement rules in the Clark Wilson model? Am I on a wrong path when I assume that certification rules ensure external integrity ...
7
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3answers
2k views

User “home directory” on iPhone, Android, Windows mobiles and Blackberry

Is anyone aware of any mobile (iPhone, Android, Windows mobiles and Blackberry) Operating System that support multi users? I am not aware but I thought it is worth double checking. Off course, in ...
5
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2answers
165 views

How is the password prompt going to protect me from ruining my computer?

On Unix based systems, I'm often prompted to enter my password before installing or running a program. Why does this protect me? If I'm running a kiosk, I understand that a password might prevent ...
7
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2answers
324 views

How is UAC a security improvement?

What does User Account Control on Windows offer in terms of security? It's just an extra click to potentially run a virus.
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1answer
1k views

Windows mandatory access control: How to remove “mandatory level” label from the file?

1) How to remove "mandatory level" label from the file? I have two files, for first icalcs return Mandatory Label\Medium Mandatory Level:(NW) for second icalcs doesn't return anything (that means ...
3
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1answer
840 views

I'm using a Cisco ASA as a VPN endpoint. Where do the VPN clients get firewalled?

(Is this too application specific? It seems like a reasonable question that would be useful to other people...) So, I've got this ASA in front of a network that I didn't set up. It's been ...
7
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3answers
613 views

What prevents this exploit from working (unix SUID)?

If I have a user on a unix system where Im allowed to create new files, what prevents me from downloading an executable file onto that system which is already SUID'ed to root on a different system? ...
6
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2answers
2k views

Bell-LaPadula and Biba Together

Theoretically, could the Bell-Lapaluda security model be implemented with the Biba integrity model in an Operating System? Or do are they mutually exclusive? [Edit: Follow up from this question on ...