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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16 views

tool for passive device forensics [migrated]

Not sure if there is a tool out there but I basically would like to find a piece of software or multiple pieces of software that I could install on all my hosts within a network, for example my office ...
34
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1answer
162k 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 ...
2
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1answer
23 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 ...
3
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1answer
26 views

Are there file-encryption tools that only allow access to whitelisted processes?

I am looking into VeraCrypt, a spiritual successor of TrueCrypt. This made a question pop up: As far as I understand, as long as the encrypted volume is mounted, every process can access the data. ...
3
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1answer
63 views

What methods are websites using to prevent direct access to media?

I really hope this question isn't off-topic... Background The question pertains to media security (video, audio, etc.), where the media in question is digitally protected (legally, DMCA-style) or ...
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0answers
19 views

Is it possible to limit remote administration accesses of an admin using Selinux? [migrated]

Suppose and admin needs to access a machine remotely.Root logins are disabled but he belongs to the sudoers list. I read that "sudo command" is good practice because you don't forget you are using ...
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1answer
32 views

rate limiting and access filter for web application

I had a requirement of rate limiting and dynamically access controlling access to web application dynamically I want to be able to rate limit access turned on / off dynamically black/white list ...
2
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2answers
42 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 ...
3
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4answers
10k views

How to check if computer is controlled remotely

My laptop has windows 7 installed. One Saturday night I couldn't fall asleep and was just lying in bed. Then suddenly at around 2 in the morning I heard the fan of the laptop start up and lights on ...
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3answers
460 views

How do I restrict network access to LAN for visitors

How do I restrict network access to LAN for visitors? In my organization's premises any outside visitor can come and connect to the LAN ports in our meeting rooms. We have seen that they are able to ...
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2answers
155 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 ...
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3answers
695 views

Prevent a server side script from a direct URL access

There is a server side script written in php(say backend_file.php) or coldfusion(say backend_file.cfm). Lets say, i am using Apache and I have a sample web folder (on my Localhost) like: ...
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1answer
20 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 ...
2
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3answers
83 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 ...
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vote
2answers
225 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 ...
1
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1answer
46 views

How safe are networking ACLs based on IP-address?

As far as I know, a determined attacker would have no major issues in hacking the IP address of the packets contained by his (web) request. Therefore, I cannot see how an Access Control List (such as ...
5
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1answer
61 views

How to to make a file private by securing the url that only authenticated users can see

I was wondering if there is a way to secure an image or a file to be hidden when it is not authenticated. Suppose there is an image in my website which can only be seen if that user is authenticated. ...
2
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1answer
46 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
30 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.
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4answers
936 views

Are keys or RFID tags more secure access control solutions?

Just musing to myself, what is the preferable access control mechanism in high security environments? Locks and Keys or RFID tags? Going under the assumption that the locks/keys are not knoow to be ...
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0answers
29 views

How can security models be relevant to the current environment?

I am trying to understand the Clark-Wilson and Brewer Nash Security Models. After deep research, I couldn't find any solution or idea to find out the relevance of these models in the current ...
0
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1answer
48 views

Can I configure a router to control access from my children's telephones as well as other devices?

Our children use both iPhones and Motorola phones. We get worn down by the fights about "confiscating" the phones, and want to be able to block access to the Internet on a device-by-device basis when ...
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3answers
228 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 ...
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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 ...
3
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1answer
211 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
votes
2answers
411 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
75 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
89 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
20 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 ...
34
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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
132 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 ...
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0answers
428 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
164 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
votes
3answers
30k 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
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1answer
80 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
1k 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
votes
1answer
48 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
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3answers
283 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
votes
2answers
109 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
votes
1answer
223 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
190 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
3k 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
votes
1answer
138 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 ...
0
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2answers
65 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
36 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
2k 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 ...
6
votes
3answers
179 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
199 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
457 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") ...