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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3
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89 views

Open source tools to run generic audit of user entitlements? [closed]

Over the past years, my team has been asked to conduct audits/reviews for other teams. Most of these audits have been compliance-driven and almost all of them have followed the same format: some group ...
3
votes
1answer
60 views

Restricted Access through Box and log commands

I want to solve following problem. Please share your ideas or directly product name that capable to solve this. Our system administrators need to connect customer's servers but I don't want to share ...
3
votes
0answers
64 views

What's The Easiest Way To Maintain Remote Users Access to a Webapp

Here is a real world case: A chain of high schools (several hundreds) has many websites (~ 3x number of Schools) that are content driven by users (the students). Every school maintains about 2-4 ...
2
votes
3answers
384 views

Remote Connection Tampering

My small high street laptop repair/service/maintenance shop has been up and running for about 3 years. It's doing quite well so I'm looking to expand into other areas of the PC market. One area I ...
2
votes
3answers
181 views

Why are UNIX-like ACLs not a form of MAC

What is the reason for UNIX-like access permissions (both the traditional user-group-others and extended ACLs) being classified as a form of DAC (Discretionary Access Control) system and not MAC ...
2
votes
2answers
3k views

Prevent unauthorized workstations from joining a Windows Domain

Corporate policy only allows users to connect corporate-issued machines to the network managed by Active Directory. Is there some means to log or otherwise detect when the same user account joins the ...
2
votes
1answer
235 views

Does this htaccess snippet provide sufficient security?

I've downloaded a part of .htaccess to prevent from using base64_encode or <script> or _REQUEST within URL. Is this secure enough to help me out for partial security, or is it just a waste of ...
2
votes
2answers
206 views

Expose the source code repository externally or allow VPN access?

To allow third party consultants, offshore developers and contractors working on the code, we can expose our Git repository externally. Or we can grant VPN access to the external parties and limit ...
2
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1answer
68 views

Protecting a database against insiders

Consider a network for a web-application with 1 webserver and 1 MySQL database, both on physically different servers and both running Linux. The database stores mission critical data and this data is ...
2
votes
1answer
754 views

How can the Google web crawler bypass portals?

This is a situation that I have encountered on a number of occasions. I will conduct a web search in Google, a link to a file (.pdf for example) will take you to that file on the server. It opens up ...
2
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2answers
382 views

Access control of Linux and Bell LaPadula Model

I know that access control is a very important think when we want to protect our files and in security in general. Does anyone know what access control system is used by linux? In addition I just ...
2
votes
1answer
1k views

Putting the Biba-LaPadula Mandatory Access Control Methods to Practise?

Text books on database systems always refer to the two Mandatory Access Control models; Biba for the Integrity objective and Bell-LaPadula for the Secrecy or Confidentiality objective. Text books ...
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2answers
116 views

Online Marketing company want me to share my Google Account login details?

We are a small business and use "Google Apps for Work" and my google apps account was used to set up the business's "Google My Business" and related Google+ pages We have now engaged an online ...
2
votes
2answers
192 views

How risky is having sensitive files on webroot?

I understand that having anything sensitive under webroot is not smart; someone may be able to access it via url. However, I do not have a choice with my web host (iPage) as they limit my server space ...
2
votes
2answers
214 views

Should I use a separate SQL Server instance for a database with PII?

We build software which needs a SQL SERVER database. This database will hold private user information (address,bank, ...) My question is: Should I install my database in a fresh SQL Server ...
2
votes
2answers
566 views

MySQL Access Control?

I have read somewhere that it is better to have two different MySQL logins in order to prevent hacking. What I mean is having one MySQL login for read access (SELECT permission) and another login for ...
2
votes
1answer
62 views

Attribute Certificates and Access Management

I recently came across Attribute Certificates (RFC 5755), which can be used as a means for authorisation. I like the idea but I have spent a lot of time searching for information how this works in a ...
2
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1answer
67 views

What is the difference between claims and capabilities in access control?

I've read about the differences between capabilities and access control lists, but to me capabilities seem similar to claims. Can anyone explain the difference, if there is one?
2
votes
1answer
80 views

Security Administrator Windows Roles

I find that security administrators often need to perform vulnerability checks on systems and these tasks need at least domain or local administrative rights. Does the security administrator need full ...
2
votes
1answer
100 views

How to find out if content on my XAMPP server has been altered

During the development of a site, me and the team decided to develop the site with my computer as a server, with me making my localhost available from outside. I have been using several settings to ...
2
votes
2answers
8k views

MAC vs DAC vs RBAC

Someone can suggest me a real situation in which is better to use MAC (Mandatory Access Control) instead of DAC (Discretionary Access Control) or RBAC (Role Based Access Control)? And in which DAC is ...
2
votes
3answers
569 views

MySQL database access prevention

I am doing a PHP website for a client who deals with third party financial information, and he is concerned about the developmers (me) having access to all the information, which is obviously a valid ...
2
votes
1answer
725 views

OAuth: client credentials vs tokens

Wouldn't it be much simpler and virtually equally secure to replace tokens by pure client credentials? Client credentials wouldn't expire and resource owners would always be able to modify their ...
2
votes
1answer
167 views

How do automated systems store their keys securely?

As with many systems (primarily websites) there are automatic components that run on a server and are not user based (such as crons) that don't have the opportunity for a real person to input a secret ...
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2answers
2k views

DMZ and LAN data exchange - what direction should connections be made?

When configuring services in the DMZ to exchange data with the internal LAN which scenario would be more secure: DMZ service pushes data to LAN service or LAN service pulls data from DMZ ...
2
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2answers
2k views

How to use 'key material' so that multiple people can access protected files?

I'm not sure if this is the right SE to ask this question, but it seems more I have a database of files that needs to be encrypted such that multiple people with different passwords/logins to this ...
2
votes
2answers
323 views

Will a crossdomain.xml file reduce a potential security risk?

I maintain a website were users are allowed to upload files. I'm doing already some good MIME-checks, consistency checks, virus checks, blacklist checks based on hash lists, some other custom checks ...
2
votes
1answer
81 views

How to reset a second factor authentication without compromising the authentication process

I am designing a system that uses two-factor authentication. Where the user can only granted access only if the two authentication factors passed the verification. Let us assume that the first ...
2
votes
2answers
984 views

Gaining root access on Ubuntu 14.04 [closed]

I am taking a Computer Security class and I am supposed to harden my system really well but I am supposed to leave one "hard backdoor" for the adversary to gain root access. I have been trying to ...
2
votes
2answers
119 views

How to appropriately secure a database using different db users

I was thinking recently of the steps to secure a database server. Most of us are aware how to handle the security on the application side, although a malicious user might find his way to bypass the ...
2
votes
1answer
79 views

Is there a strong protection against CSRF executed from the sames server via stored XSS?

If we have a domain with stored-XSS vulnerability. I know it's already critical!.. But, I'm talking about limiting the damage. The hacker can't get the session cookie of the admin, because it's ...
2
votes
1answer
938 views

Security implications of granting IIS user group folder modify permissions

I have an Application Pool in IIS running under the standard AppPoolIdentity as part of the IIS_IUSRS group. What are the security implications of granting AppPoolIdentity modify and create ...
2
votes
1answer
75 views

Preventing softwares from leaving traces in Windows | deleting the traces easily

Say I open a .doc file from my UFD. I want to avoid leaving any traces in Windows (e.g. recent files, back-up files, swaps, etc) , or at least be able to delete all easily. So in this case, I want to ...
2
votes
1answer
1k views

Is htaccess secure enought to whitelist clients IPs?

I'm using .htaccess to control source IP of connections to my web application. My configuration looks more or less like this: order deny,allow deny from all allow from X.Y.Z.Q These ...
2
votes
2answers
197 views

Preventing Client PC's from accessing C&C machines

At my office I find us constantly fighting with malware. All users run under the "user" level, we have McAfee and have recently reviewed the Best Practices guide to ensure we adhere to it, all of my ...
2
votes
1answer
122 views

How to determine which program accessed the Mac Camera?

The green light on my laptop's camera just flashed on and then off after 1 second. I am extremely concerned about this since I am not running any programs which could have enabled the camera. I ...
2
votes
3answers
1k views

On Windows, how to restrict access to a folder, sub folder and files to only some applications (not users)

We have an application which is not per user and can be used by multiple users simultaneously. Data is also shared by all users. The path to the data folders we use is ProgramData\OurAppName\Data ...
2
votes
1answer
111 views

Smart cards and firewalls are what type of access control?

Specifically for the CISSP, trying to figure out what type of access control these would be considered.
2
votes
2answers
174 views

RBAC and assertions, which authorization flow is better?

I'd like to ask which authorization flow is considered better or standard. First approach (has role AND assertion is valid): if (!isGranted(roles, permission) { return false; } if ...
2
votes
1answer
83 views

Access Flags for Handles

The handles window in process Explorer has a column Access which supposedly determines the access rights of that particular handle. I am not able to get any documentation on how to read the flags and ...
2
votes
0answers
34 views

What are the most common ways to Architect the verification process of the access tokens between resource and authentication server using OAUTH 2.0?

What are the most common ways to Architect the verification process of the access tokens between resource server and authentication server using OAUTH 2.0? I am trying to build a web application ...
2
votes
0answers
23 views

Unique assignment of permissions to objects seems to also require the role?

So my understanding of RBAC is that Users have Roles, and Roles have Permissions and there should be a Permission Object mapping. I'm having a bit of a business logic problem though concerning RBAC. ...
2
votes
0answers
68 views

How to access files or getting rights access with NJrat

When I'm using NJrat to control my own computer, I can't delete, open or move some files. Are there some kind of security access I need to stop first? How can I change this to allow full access?
2
votes
2answers
467 views

Teamviewer Security Question [closed]

Currently we are using Teamviewer 9. We have a couple of desktop machines that are locked down in the following manner: 1). The shell is no longer explorer.exe, it is a custom program we have ...
2
votes
0answers
866 views

Google ads and/or DoubleClick wants to access the keyboard API in Firefox? [closed]

I have started Firefox in an Ubuntu terminal, and now I see these messages during browsing: "No permission to use the keyboard API for http://googleads.g.doubleclick.net" I mean... WTF? Why does ...
1
vote
1answer
859 views

Is a firewall an access control list?

I want to know if a firewall is considered an access control list (ACL). I know there are other types of ACLs, but am specifically interested in knowing if a firewall is an ACL. Edit: It appears ...
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vote
2answers
177 views

Wifi box produces three SSIDs?

While using a friend's wifi, he said I should use his SSID, let's call it XYZ's Wifi. When I started my Macbook Pro, three SSIDs came up. Two were called XYZ's Wifi and the third was called XYZ's ...
1
vote
2answers
291 views

How to restrict access to unwanted sites?

I use Ubuntu 13.10. I tried to used OpenDNS to restrict some websites. Unfortunately, I couldn't do that. I use AirStream 1200 USB modem to access WiMax internet. OpenDNS setting didn't work for me at ...
1
vote
2answers
872 views

BLP Lattice structure with missing top and bottom levels

I designed a system similar to the above diagram. However There is no (Top Secret, {nuclear,crypto}) and no (Secret,{}) levels. Meaning that there is no top and bottom level. Would it make the BLP ...
1
vote
3answers
254 views

Resetting passwords howto

I am currently in the process of designing a registration form for the users to register accounts. The accounts will contain a lot of personal information, so I want to ensure highest possible ...