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.

learn more… | top users | synonyms

3
votes
1answer
112 views

User Account Notification under Windows useful at all?

IMHO the 'screen dimming'-and-displaying-of-warning-window feature (?) in Windows is extremely annoying, since I routinely run software that does require the permission to modify a lot of things. I ...
3
votes
2answers
49 views

How to host application monitoring and administration dashboards?

I'm in the middle of completing a web app for production. This is my first one. I'm at the point where I have to put together an administrator dashboard for comprehensive monitoring and administration ...
3
votes
1answer
86 views

Enabling Unsigned ActiveX

A third-party wants to provide a web app which they say only works if we enable unsigned ActiveX (unfortunately users are required to use IE). I understand what 'signing' is, as well as the basic ...
3
votes
2answers
379 views

Can I use stormpath user management service with a XACML library like BALANA?

I'm trying to implement some security access control in a software I'm building. I came across Stormpath for user management and they have somewhat an approach for RBAC yet what I was considering is ...
3
votes
1answer
65 views

What can I do to separate users best way if they are allowed to run their ruby (python) code

I have Ubuntu server 12.04 on VDS and I allow users to run their own Rails applications on behalf their own accounts. That means: They can use any shell they want They can upload what they want, ...
3
votes
0answers
31 views

Protocols for transfering access control data

The company I am working for has decided to create an API for a few of the products we create here (we create physical access control solutions, card readers, key storage, intelligent door locks and ...
3
votes
0answers
90 views

Work wants to create an admin account on my system that I don't have access to? [closed]

This is on a Windows 10 system, and they want to create an administrator account that only my manager will have the password to. This is apparently to enforce some new "security policies" that haven't ...
3
votes
2answers
53 views

Is ignoring share permissions ok?

For my small home network I've found that it is easiest to setup network shares with share permissions set to Everyone: Full Control share permission and then configure the NTFS permissions according ...
3
votes
0answers
56 views

WiFi Fingerprinting RFC2617 Linux Device Cannot Unauthenticate Unless AP Password Changes

There is a Cisco WiFi Access Point in the office that is intended for guests. It is an open network in that you can associate without providing a password with the SSID. It supports RFC2617 and so the ...
3
votes
0answers
134 views

Is there a way my organization can collect clients' sensitive documents without being liable for them? [closed]

I am the head of IT for a microlending organization. We make small loans to new businesses, and as such we have to collect these clients' tax returns and other financial data as part of the ...
3
votes
1answer
67 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
406 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
191 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
4k 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
244 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
266 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
votes
1answer
79 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
797 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
votes
2answers
418 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 ...
2
votes
2answers
223 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
242 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
623 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
111 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
votes
1answer
92 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
102 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
2answers
10k 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
592 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
792 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
182 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 ...
2
votes
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
votes
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
419 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
88 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
1k 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
120 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
1k 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
77 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
219 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
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
143 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
185 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
86 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
50 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
25 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
81 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
0answers
114 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 ...
2
votes
2answers
517 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 ...