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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3answers
220 views

Using remote desktop

I was having trouble getting Outlook to work with my schools email account and called the help desk. They gave me a link to install a program called Bomgar. I installed it and clicked "allow viewing ...
2
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4answers
4k views

how safe is a home NAS with ssh access?

I'm thinking about acquiring a NAS from Synology (or QNap), these are pretty cool NAS and do much more than just storing files. Some extras include: ssh, ftp, telnet, mail servers photo gallery ...
0
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2answers
113 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 ...
0
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1answer
15 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 ...
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2answers
149 views

Teamviewer Security Question

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 ...
3
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1answer
189 views

Safety in Access Control Matrix and Take-Grant Model

I'm learning about the Take-Grant Model and Access Control Matrix, and I have a couple of questions regarding leaking and the safety question. Definitions These are the definitions I am using (see ...
4
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2answers
340 views

What port services can hackers use to break into a server?

I am getting ready to run my first server. I will use ufw to disable every port except port 22 for ssh and port 80 for http. I am curious though. Suppose theoretically I left every port open except ...
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2answers
56 views

Access token vs. UserID + access token

My goal is to associate (authenticate) hardware devices to users in the database. The access token is generated via webinterface. It is then entered into the hardware device by the user, and the ...
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1answer
73 views

how to gain root access to linux machine? [closed]

I am a security auditor and I have faced the following situation: A development company that has a group of Linux machines gives limited access to their users. They asked me to find out all the ...
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0answers
16 views

Access Control that are used on Ubuntu? [closed]

I want to ask about access control that are used on Ubuntu. I already read Ubuntu Access Control List but I'm still confused. Is there someone can explain about access control on Ubuntu? Because ...
32
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4answers
4k views

Are there DRM techniques to effectively prevent pirating?

A question on Skeptics.SE asks whether current DRM techniques effectively prevent pirating: Is DRM effective? The question for IT Security is: Can DRM be made effective, and are there any examples? ...
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5answers
128 views

Is there a term for Authorizing before Authenticating? Is it even common?

In most scenarios a person identifies who they are (authentication/AuthN) via something like a username and password. Afterwards a system would likely evaluate what that validated identity can perform ...
1
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0answers
356 views

automatic connection from LSASS to different IPs. Is this the usual behavior?

I'm using windows 7. firefox 22. connecting through a regular residential wifi router. In the last month I've noticed that when I connect to the internet and once in a while my firewall indicates me ...
3
votes
5answers
160 views

Windows: Any method to enforce user confirmation before the browser opens a URL requested by an external desktop app?

A robust outgoing firewall will protect against desktop applications directly connecting to the internet without your permission. However, as the browser is a generally authorized application for ...
13
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3answers
26k views

How do you discover what permissions an AD group has, if you have no documentation?

You just got hired at company A and the old administrator is no longer there. Requests start coming through for adding users to the internet restrict group. When you look at the groups none of the ...
1
vote
1answer
66 views

Is it safe to store important data in an encrypted access token?

Is it safe to store important data in an encrypted access token? For example, instead of storing access tokens in a database, not storing them at all and putting their associated data into them before ...
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votes
5answers
964 views

Google Calendar has events that I didn't create and it's not shared

This has been rewritten because at first I thought this may be an accident but now it’s clear there’s a security compromise. In my Google Calendar I noticed an event that occurred each day from ...
3
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1answer
44 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 ...
0
votes
3answers
179 views

Securing apache by IP with .htaccess

I have a folder that I don't want to be accessible from outside my network's LAN. It seems like all traffic from the outside world goes through my firewall (192.168.1.39). So I made my .htaccess as ...
2
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2answers
97 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 ...
0
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1answer
185 views

is UPnP / NAT-PMP really necessary today?

The possibility to enable port forwards for any hosts inside the LAN has of course security implications. The problem from my point of view is not that there are bad users, but bad hosts/programs and ...
1
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2answers
136 views

Contactless session on ATM?

I'm currently reading about an access control and saw something interesting about smartcard contact & contactless. From what I understood from the book, smartcard contact is like an ATM Card. ...
20
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9answers
2k views

In Healthcare IT, is a “break glass” mode to bypass access controls commonly required?

I've seen referenced in literature the need to have a "break glass" mode in Healthcare IT applications. In this mode, the access controls in an application can be bypassed for an emergency when it is ...
4
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1answer
125 views

Car Remote App Security

Car manufactures like BMW, Audi or Mercedes-Benz all provide mobile applications to control your car. All apps share really critical functions like remote lock/unlock or the ability to find your car ...
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2answers
64 views

How many accounts should I have in an information system?

Is it a problem to have more than one account in an information system from security point of view? Let me clarify a bit. It is a bank system. I wonder if having a CSO (customer service officer) ...
0
votes
1answer
29 views

Directory Listing on WordPress

If a WorPress application that uses the Akismet wordpress plugin has certain directory listing exposed publicly, like, akismet-en_AU.po and the other .po files, and directories like plugins, themes, ...
10
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7answers
1k views

Alternative to VPN

We have a network that is completely closed to the outside world. It needs to be. Problem is we need to remote into a server on this network once in a blue moon for diagnostics. We've discussed ways ...
28
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1answer
138k views

Why can you bypass restricted WiFis by adding “?.jpg” to the URL?

I recently read an article on Hacking a commercial airport WLAN. It's basically about circumventing paid airport WiFi redirections (they redirect you to a certain URL when you type something in the ...
5
votes
3answers
133 views

Is SESAME really used in Europe?

I am looking at a text that mentions that the Secure European System for Applications in a Multi-vendor Environment (SESAME) was designed to address some of Kerberos weakness, with enhancements such ...
6
votes
2answers
1k views

What are best practices for implementing ACL

I have a website that has certain menu items that need to be hidden from end users. The web site has PHP in the front-end and Java and Spring in the back-end, deployed on a Linux OS in a VM ...
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3answers
187 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 ...
8
votes
1answer
422 views

What datastructure would/have you used to store ACLs within a hybrid ACL/RBAC system?

In our system, every resource has an access control list (ACLs), which list entries (ACEs) that have a specific kind of access to that resource. The ACE can be for end-entities (eg: users like "Mr Q") ...
2
votes
2answers
88 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 ...
27
votes
5answers
5k views

Is Linux really that secure, with only root password denying external access?

While I was searching online for information about Linux security, the most typical explanation was: Linux is secure, because the root password is required to access the kernel and install new ...
1
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1answer
334 views

Installing Joomla with nobody:nobody user/group (CentOS/cPanel)

If you are installing Joomla via cPanel's File Manager to your mywebsite.com (user mywebsite) account, you will upload the package to your server and extract the archive. All files will have the user ...
4
votes
5answers
163 views

Can someone please explain RBAC to me?

From http://msdn.microsoft.com/en-us/library/jj709705.aspx In contrast to the DAC model, which is oriented around objects, the AzMan RBAC model attempts to orient the common administrative experience ...
3
votes
1answer
95 views

Access rights management in large companies

I'm wondering how large companies with tens / hundred of applications are handling access-rights for their users. From what I've seen, it's a nightmare that never ends, and it requires full-time ...
1
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0answers
46 views

Why allow access without an access token but deny access with an invalid access token?

I encountered a data storage service with rather weird access policies. There're "folders" with "files" and each "folder" can have either of the following permissions: anyone in the world can ...
2
votes
1answer
1k 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 ...
4
votes
3answers
8k views

Better techniques than url parameter encryption

I'm a programmer working on an application where the only choice/vs/deadline was to implement symmetric encryption on url parameter values. The data is insensitive in nature, but we needed to prevent ...
28
votes
20answers
4k views

How can I prevent my kids from bypassing my computer restrictions?

My son has a downloaded copy of Ubuntu that he uses to "break" into my computer, bypassing Vista. I have two questions: Can this damage my computer or corrupt my files? (I have lots of pictures) Is ...
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2answers
44 views

Should application logs be available to admins or just superuser?

I'm developing a kind of standard web-application, to be hosted internally on few customer's servers (not a public service, startup or anything like that). A kind of CMS, e-learning platform or ...
1
vote
1answer
178 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 ...
1
vote
1answer
228 views

Physical vs Logical - Location/Address

According to the CJIS Security Policy - Access Enforcement The information system shall enforce assigned authorizations for controlling access to the system and contained information. The ...
14
votes
5answers
3k views

Comparsion Between AppArmor and Selinux

I was reviewing several different comparison of AppArmor and Selinux which include Why I Like AppArmor More Than SELinux SELinux and AppArmor: An Introductory Comparison From these articles I ...
1
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1answer
83 views

Is open-to-all CORS safe for non-cookie-based authentication schemes (e.g. OAuth)

I'm building an API with both protected and public endpoints, and I'm protecting it with OAuth 2's various flows. I want this API to be open to the world - the main consumer website won't even be on ...
0
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0answers
57 views

Bell-LaPadula implementing by using sets of roles

I have sets of roles defined hierarchically, i.e. role anonymous is a subset of role super-user. The roles are given tu users and also used in the ACL for marking who has access to a resource. ...
21
votes
7answers
7k views

If a Windows laptop with an encrypted hard disk is stolen, can the contents be accessed by a professional hacker? [closed]

In other words, how easy is it to break into Windows without having the passwords for any of the users configured in the computer?
22
votes
11answers
8k views

Prevent my site from being copied

Is it possible to protect my site from HTTrack Website Copier or any similar program? Without setting a max number of HTTP request from users.
2
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1answer
347 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 ...