Authentication - establishing the authenticity of a person or other entity. Not to be confused with authorization - defining access rights to resources.

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Shared Key vs Pre-Shared Key

Does Shared key and Pre-shared key mean different thing ? Currently reading Text , Security+ Guide to Network Security Fundamentals.
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4answers
934 views

What is the point in having arbitrary username requirements?

I've looked around on Security.SE, but couldn't find much related to the following problem: I recently signed up for Chase Quick Pay as my method of being paid by a part-time job. I've heard of ...
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0answers
68 views

How can I protect my “try it with one click” service?

I have a service with "try it now" experience that currently offers a "one click" effort. This service has a pool of N resources (lets say 50). Each new resource takes about 1 hour to generate. ...
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0answers
41 views

Authenticating Session-less system [on hold]

While trying to understand the authentication in distributed system, I came up with a situation where their is a front web based application, where the access is given through authentication done by ...
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6answers
886 views

Additional security benefits from Multi-Factor Authentication?

Does multi-factor authentication provide any additional security benefits on top of doing a better job at correctly identifying and authenticating users compared to single factor authentication? In ...
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1answer
47 views

Logging in users automatically on a website

I'm making a website that has an extended forum feature, where users can login, post comments, etc. I'm making the feature where the website stores cookies in your computer so the next time you visit ...
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3answers
109 views

Example of application that doesn't require “strong authentication”

Does anyone have any examples of real-life applications that doesn't require "strong authentication". I am looking specifically for blog posts or even scientific papers that argue that "strong ...
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2answers
60 views

https login iframe 2014

Per current security recommendations & browser support, is it okay to have an https iframe in an otherwise http-only set of pages? Is this not a dupe? It is, but I want current trends because ...
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2answers
67 views

Can a mobile number ring if the person has not inserted their simcard into their phone? [on hold]

I dialled a cell phone number and it rang but with no reply. I asked the person later why they did not answer and they said the Sim card was not in the phone. In fact, it was in a purse.... Is this ...
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2answers
61 views

A Graphical Two-Step Authentication System [duplicate]

Changes made to system proposed in Two-factor authentication Without Mobile Phone: In previous system, shoulder surfing would reveal the user’s pre-decided image. In the current system, end image ...
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1answer
68 views

What are the dangers of allowing “less secure apps” to access my Google account?

According to https://support.google.com/accounts/answer/6010255: Google may block sign in attempts from some apps or devices that do not use modern security standards. Since these apps and devices ...
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1answer
65 views

Is this a safe way to identify users connecting to a chat server?

Before I start, all information will go over HTTPS. So, my website is basically like a forum with the authentication part finished and working. This forum has a real time chat application that sends ...
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1answer
36 views

How to maintain validity of user credentials?

In an example scenario consider that; I am a customer of organisation and I have two separate accounts with two different departments X and Y. I can login in to each department's website by using ...
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1answer
74 views

VPN security/compromise

I want to get a VPN with one of the known providers. I don't know much about VPNs but I know they issue certificates which you download and it authenticates the connection and basically gives access. ...
2
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1answer
39 views

Possibility of using CA as an attack point by governmental organizations under their pressure

I was always concerned about the model of trust behind CA stuff we use . Well, for most of us, it is OK to trust them, since they are reliable organizations with a bunch of solid experience. ...
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0answers
26 views

Considerations for distributed authentication with online/offline app?

I am developing an application that will exist across three groups of machines: 1) A central web server. This is a publicly available site accessible via http. 2) Browser-based clients. Any number ...
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2answers
54 views

Securing login form in a desktop app

I currently have a desktop application which requires the user to have a username and a password. These credentials are stored on a webserver (myserver.com), so when he types the username and the ...
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1answer
39 views

How do I force kill an OWA, Activesync, or Outlook session?

A user with a BYOD is still able to access the email system, even after the user account has been disabled and password changed. Since it's clear that a re-authentication event doesn't continually ...
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2answers
72 views

How to transfer securely a file between servers?

Let's say I have two Linux servers. One containing a desktop app database (running on a local network) and a webserver. I want to automatically transfer each hour a database file (with a size of a ...
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1answer
101 views

Strange name on “shared”, was I hacked?

I use a Macbook Air 2013 and I recently noticed a very strange and long line of digits and letters under my "shared" category in finder. When I click on the name, it just says "failed to connect." It ...
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1answer
48 views

Authentication of temporary worker without a badge (physical security) [closed]

In our company we have a procedure to verify internal worker but we cannot use it for temporary worker. We cannot use badges and because of privacy reasons we cannot use any photos. Is there any other ...
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1answer
67 views

Why recommend “letters, numbers, and special characters” in a User ID?

Why do some sites recommend "letters, numbers, and special characters" in a username or User ID? When creating a User ID at the www.discovercard.com website, the "User ID Strength" indicator meter ...
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1answer
20 views

Choosing right way to secure access to server access via socket

I have an application running on a server, that has an exposed socket to the Internet to communicate with client that is/are application(s) on a phone. How would one go about properly securing the ...
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0answers
11 views

IdM on apps we host for a client

We're looking at hosting some of a client's existing applications in our environment. My current thinking is we will have an encrypted channel back to the client's network over which authentication ...
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1answer
61 views

Password Storage with Jasypt StrongPasswordEncryptor vs PBKDF2

We are currently working on authentication for a web application. For password storage, we're using Jasypt StrongPasswordEncryptor with SHA-256 and tens of thousands of iterations. Going into the ...
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1answer
73 views

Certificate validation with 802.1x PEAP

I recently learned about how WPA-PSK works. If I understand correctly, the 4-way handshake enables the protocol to ensure mutual possession of the PMK (and therefor, the PSK) without sending the ...
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1answer
92 views

ssh always too many authentication failures

No matter on which server I try to connect via password login, I always get the error message Too many authentication failures for If I have exchanged the ssh-keys, I can login without password as ...
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4answers
126 views

Why must every OTP be unique

All OTP systems that I have observed, send a new OTP every time a user requests for an OTP. (for example whatsapp) Only the latest OTP is valid and an OTP can only be used for X hours. I am wondering ...
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16 views

How to test ldap that authenticates with kerberos

I want to test an ldap directory with ldapsearch. No passwords are stored in the LDAP directory. Account passwords are stored in Kerberos and LDAP contains a pointer to the Kerberos principal. The ...
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2answers
81 views

Where is the identification process when I use a key fob to unlock a door

I can understand that typing my user name on the computer is "identification" and providing the password is "authentication" but when I use a smart card or a key fob I see no identification taking ...
2
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1answer
91 views

Is it safe to use virtual mobile numbers for verification

Is it safe to use virtual mobile numbers for account verification & authentication for services such as PayPal, Twitter, Gmail, Linkekdin, etc.? And what is the security drawback for this?
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4answers
157 views

Authentication with an untrusted server

I asked a related question earlier, but I want to ask a broader version this time: To simplify things let's say I've developed an application that allows users to send messages in a chat room, and to ...
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2answers
58 views

Are there any flaws in my design for a paper-based OTP grid?

I'm trying to implement two-factor authentication on the cheap for a website of mine. My bank uses this sort of grid-based OTP system, so I wanted to emulate it in my application: Cards are ...
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2answers
87 views

Security issues in “Remember Me” function code example

I'm a beginner, and these may be very obvious for you, but I'm trying to understand if there are security issues with this example. Today on Stack Overflow, I saw the following post: PHP Sessions ...
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23 views

Should Javascript & IFrames be used to refresh sessions when Master Cookie Domains are used?

Suppose I have 3 sites that I want to have SSO in, site1.com, site2.com, and auth.com. SSL is always required. According to how SiteMinder cookies are described here, one of those domains would ...
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3answers
100 views

“Remember me” cookies - did I implement them securely?

I am currently working on a pet project website and I want to implement the "remember me" feature for logins and wanted to know if my procedure is secure. The authentication process basically goes ...
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5answers
152 views

Why after a website password reset am I asked to login again?

I have noticed that every web site has the exact same behavior for their password reset pages. They send a link to your email using which you can reach the password reset page. On that page you enter ...
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1answer
29 views

Are AWS security groups sufficient to authenticate communication between instances? (HIPAA)

Say I have a private service that exposes sensitive information (PHI) via a REST API, and that I want to permit access to it from only one other service. Is it enough to partition these services ...
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1answer
73 views

Native app, token authentication without login/password

I'm working on a always online mobile game (native android/iOS app with Unity) and i would like to be able to authenticate the player without requiring any login/password at the beginning. For those ...
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0answers
74 views

Secure login procedure

I have implemented a login, and session, procedure for a web app and I am wondering whether what I have implemented is secure enough. The authentication is based on login password on https. If the ...
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1answer
43 views

Basis Authentication Protocol: a concrete attack

Below is an informal protocol narration of a simple authentication protocol. A sends to B a signed hash of message M, B's name and a nonce N. B knows that the message M is intended for him, that it ...
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3answers
107 views

Would this authentication method prevent MiTMs getting the password?

Assuming SSL/TLS cannot be used in this context, is this method secure enough to authenticate someone without someone listening to be able to retrieve the password from the information transmitted. ...
2
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1answer
44 views

Securing fingerprint templates stored on web authentication server

I have a multi-factor web authentication server, that in addition to regular passwords uses fingerprints for user authentication. Can anyone think of a security flaw in the following scenario: I ...
0
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2answers
91 views

Is a Windows AD credential combined with AD group membership 2 factor authentication?

We have a requirement for 2-factor authentication for our internal WiFi SSID's. Currently we use PEAP w/ MS-CHAPv2 to pass windows creds through the AP to a RADIUS server (A Domain Controller running ...
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3answers
97 views

User Account Guessing [duplicate]

I'm doing some research on user account guessing, and wanted to ask a question about some "bad practices". My thought is generally this is a trade-off between great user functionality/UX and ...
0
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1answer
20 views

Secure automatic authentication to samba share

I need to pull some data from network storage to a publicly available laptop that is running Linux. The network storage used to be provided via a server that could be connected to via ssh, but it has ...
2
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0answers
90 views

Compromised JSON Web Token (JWT) Bearer Token

We are implementing a REST service that requires authentication and authorization. Because of the stateless nature of REST API's, we want to use JWT to make authenticated calls to the API through a ...
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1answer
40 views

Server + Client certificate vs Server certificate + Client password

There are three different ways how TLS (1.2) can be used: server and client authenticate, only the server authenticates or neither authenticates. If neither server nor client authenticates using a ...
0
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1answer
67 views

How can LastPass enforce 2-factor authentication

I've recently started using LastPass and one of the things you can set as a policy for you password vault is Prevent offline access when using Google Authenticator. The local cache can be ...
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1answer
57 views

Auth / Login token schema

According to this answer, a valid login token schema would consist of the username (U) the time of issuance (T) and secret key K owned by the server only The suggestion then is to concatenate the ...