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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8
votes
2answers
290 views

What's ownership concept for?

I fail to grasp the necessity of using concept of owner (ownership) and find clear explanation of its necessity. What cannot be done without concept of owner(ownership) in filesystem/database object ...
0
votes
1answer
40 views

Restrict access to a specific type of entity

I want to create a web service that can only be accessed by a specific type of entity: my own mobile application. Is there any well-accepted methods to do this? I'm thinking about embedding a secret ...
15
votes
6answers
11k views

Difference between Privilege and Permission

I am a little confused on the contextual differences between permission and privilege from computer security perspective.Though I have read the definition of both the terms but it will be nice if ...
21
votes
7answers
2k views

My company policy states I must put all passwords in a password safe shared with management. Is this secure?

As the title says, my company has a policy that all passwords to e.g. our workstations and server logins must be stored in an online safe. I won't say which one but there are some out there you can ...
16
votes
3answers
919 views

Risks of Mullions in High Security Areas

I have a storage space full of information assets. The room itself is sound; there are no windows, the walls go all the ceiling, and there is only a single entrance with two good stout doors and high ...
6
votes
1answer
144 views

Building access card that has an identification role

The main question is should a building access card have the corporate logo on it? In this organization, the employee ID card is separate from building access card. We currently do not have the logo ...
2
votes
3answers
402 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 ...
4
votes
3answers
5k views

Role vs Identity based authentication? What is the difference?

What is the difference between role-based authentication and identity-based authentication? If a system uses ONLY a password mechanism to authenticate operators (different PIN for Admin and User) it ...
0
votes
2answers
140 views

Allow or Deny Access to a Network Based on Client Hardware [duplicate]

We have to build a product that will have a network. Users will be able to connect to this network by downloading a client. However, before allowing them to access the network we want to check if ...
13
votes
2answers
2k views

Why do some Java APIs bypass standard SecurityManager checks?

In Java, normally permission checks are handled by the SecurityManager. To prevent untrusted code from invoking privileged code and exploiting some bug in the privileged code, SecurityManager checks ...
1
vote
1answer
1k views

Possible to limit server connections to clients with a specific certificate?

Usually when I read about SSL and HTTP it says that the certificate is set up to authenticate that the host is who it says it is. Is it possible to configure the host to prevent it from processing ...
4
votes
2answers
16k views

How to detect/list rogue computers connected to a WIFI network without access to the Wifi Router interface?

This is what I believe to be an interesting challenge :) A relative (that lives a bit too far to go there in person) is complaining that their WIFI/Internet network performance has gone down ...
20
votes
3answers
15k views

Router password vs MAC filtering?

I just bought a Galaxy S4, and it didn't connect to the WIFI in my house (I have a 14$ router). After a bit of testing, I've decided to leave my connection open without a password, but added the ...
1
vote
1answer
83 views

Starting point for Mobile Device Security particularly in a MDM setting?

I am looking for some good reference material (books, blogs, names, etc..) regarding Mobile Device Security. I am specifically interested in Corporate Mobile Device Management (MDM) where often ...
4
votes
4answers
4k views

Block unauthorized user from getting access to intranet

What's the common way to block users from accessing intranet? Right now, whoever plugs in a cable can access any intranet server freely. I want to change this behavior. But given that we run not only ...
0
votes
1answer
799 views

Who to assign read/write access rights for a single-user application to run correctly?

My application installs for a single user on a Windows machine. Any user may install the application for himself, but the application will save some information common to all users in a separate ...
7
votes
2answers
564 views

Full-disk encryption and theft mitigation?

Is it possible to combine the security of full-disk encryption (e.g. Truecrypt) with the honeypot-like performance of anti-theft tools (e.g. Prey)? In other words, is it feasible to have both strong ...
0
votes
2answers
190 views

How to allow only the public key owner to submit requests to my site? And what is this type of security called?

This was probably asked many times here, but I'm not finding any because I'm not sure what to look for. I'm developing a simple payment gateway, where partners (consumers) can submit requests so ...
2
votes
1answer
785 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 ...
5
votes
3answers
589 views

How can i deal with management who want 'Domain Admin' access?

While I primarily work with penetration testing for my company (A small/medium sized company with approx 50 employees), I'm also a part time member of their sys-admins team (it's handy to keep up-to ...
8
votes
1answer
286 views

Using / finding covert channels in inter-process communication

I've got a class exercise that involves a virtual game of Werewolves/Mafia. We're not really taught how to do anything in this class, which makes it hard for everyone to do the labs. The idea is that ...
2
votes
3answers
190 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 ...
-1
votes
1answer
106 views

For a Broker/Dealer, what technology is appropriate to limit transaction to a given state? [closed]

The SEC allows for individuals to not register with them if they don't permit business with users outside of the state: A broker-dealer that conducts all of its business in one state does not ...
3
votes
3answers
2k views

Using /usr/bin/passwd as login shell

I have a requirement to set up a SSH tunnel between two hosts. SSH server runs on a Linux host, and the SSH client (PuTTY) runs on a Windows host. I have set up a separate user account (say 'tunnel') ...
2
votes
3answers
587 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 ...
3
votes
2answers
121 views

Authorising use of apps from a public store with no back end service

I have a project I'm involved in which needs to distribute a mobile app to a specific audience. Due to regulatory restrictions in the target market, only this audience is allowed to access the data ...
3
votes
3answers
3k views

Should I give developers admin rights or leave as power users? [duplicate]

In my organization we are in the process of upgrading everyone to Windows 7.We have all of our users configured as power users. The issue we are running into is this: Should we give developers local ...
7
votes
4answers
2k views

Safest way for multiple users post to a single social networking account

Suppose I have a team or organization managing a single twitter account and a single facebook page. Different users need to be able to post content to the same account. How can I minimize the risk of ...
4
votes
2answers
933 views

How can the low-water mark property apply to Bell-LaPadula?

I am taking a computer security class, and have a homework problem which has the following setup: Now assume a dynamic version of the Bell-La Padula Confidentiality model that incorporates a ...
-1
votes
1answer
115 views

Bringing in an intern

When bringing in an intern to help you in the IT world and with access to servers and client information, what kind of forms should be signed, especially when they work remotely?
2
votes
2answers
618 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 ...
19
votes
5answers
114k views

Can someone steal money from my bank account if they know my IBAN and personal details?

To deposit money into your account, some websites require that you provide them with a lot of details about your bank account: name, complete address and IBAN which includes your account number and ...
3
votes
1answer
291 views

Is RDP an effective security barrier

If you need to provide access to a GUI / GUIs in one network from within another network, can RDP (e.g. via Terminal Services) be used as an effective security 'barrier', to stop any other direct ...
4
votes
3answers
664 views

Allow a PA to see a director's emails, but keep some emails private

We have a problem with email potentially being viewed by directors PAs, which we need to protect, the situation is as follows: Director A wants to send an email to Director B, both director A and ...
1
vote
1answer
340 views

What are the basic implementations that make a network secure from the inside\outside?

Would you consider the following to be "basic hardening items" for network equipment and servers? VLANs Access Control (such as NTFS permissions) Patch Management System Host Firewall Anti-Virus ...
-1
votes
1answer
195 views

setting up website for logged in users, anyone, and files no one should see (via the web) [closed]

I asked how to prevent not logged in users from seeing certain content but the solution I chose to implement encountered a problem. I chose to make my root directory for the server C:\WAMP\www\public ...
0
votes
1answer
69 views

Relative costs involved in making changes to the current organisational security

I need help understanding what is required by the phrase "a comparison of the relative costs involved in making changes to the current organizational security procedures". Am I to compare the cost ...
5
votes
3answers
937 views

Live Linux which does not mount any hard drive in the computer

I am searching for a Linux System which runs from a CD and does not mount any hard drive of the computer. I want to prevent any possiblity to write something on the hard drive of the computer and on ...
1
vote
2answers
182 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
177 views

passwords database - access control and/or synchronization

so, we've got a ton of passwords that several different administrators need to have access to, each with their unique password/key/user/whatever... it needs to be either centralized, or the passwords ...
-1
votes
5answers
5k views

How can I configure my router to prevent connections bypassing it?

I am trying to configure my router to control access for several of my devices at home. I am currently using a linksys router. Our home consists of three devices (a desktop, a laptop, and a ...
1
vote
1answer
238 views

IPtables - Accept Arbitrary Packets

I've achieved a lot on blocking attacks on GameServers but I'm stuck on something. I've blocked major requests of game-server which it aceepts in the form "\xff\xff\xff\xff" which can be followed by ...
2
votes
1answer
168 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 ...
15
votes
2answers
996 views

Network policies under AppArmor/SELinux

I am attempting to sandbox some untrusted processes using Linux's MAC frameworks -- either SELinux or AppArmor. I see that both SELinux and AppArmor allow the selected granting of socket level access ...
5
votes
2answers
3k views

Restrict network access for a single process with SELinux or AppArmor

I have a Python script that access the network, and I want to deny it network access sometimes. How can I achieve this with SELinux or AppArmor? I want to be able to launch this specific script with ...
3
votes
3answers
858 views

Access Control and Authentication using Facebook access tokens in a webapp

I'm working on a mobile app with a web backend. We'd like to have users authenticate (log in) themselves through Facebook only, so we don't have to store passwords etc. and don't force users to create ...
0
votes
1answer
82 views

how to stop write downs

Consider a scenario with two security levels, Alice and Bob. Bob is Alice's boss. Bob must be able to read Alice's documents but not write anything to her documents. I am using encryption keys to ...
0
votes
6answers
371 views

What sort of security method is this called (if it has a name)?

I have thought of a way of securing access to an application interacting with another application. Using this method Application 1 - "What is the sum of 1+1?" Application 2 - "3" Application 1 - ...
0
votes
3answers
360 views

Keyless entry security systems and HIPAA implications

We are upgrading our office to have badged security doors. What I would particularly like to know is if Keyless Entry systems exist or are of decent quality. By this I mean, I would like the doors ...
-3
votes
3answers
240 views

wireless security concern [closed]

My small office has Netgear Router (N300 DGN2200). I had it secured using "password" . So any computer which needed access had to give the security password. But today a outsider accessed my router ...