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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Client authentication with a collection of open source distributed servers

With a collection of open source distributed servers, all sharing every users data. How can the user authenticate with any server, without the passwords being compromised by a malicious server? ...
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1answer
233 views

Authentication and security of a REST API

Scenario: I design a REST API where authenticated users can hit the API over TLS. I have to use TLS as the data transmitted over the wire is sensitive. I don't need authorization right now, but I ...
2
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4answers
865 views

Analyze my custom web authentication scheme, based on a token derived from username and password

To avoid having the user to login every time his session expires, I want to implement a token based authentication system. My scheme works like this: Send the user login (send name + password) ...
2
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0answers
80 views

How secure is docker container-to-container traffic?

I'm working on building a web application using the microservice architecture pattern in a set of docker containers and I'm wondering about the importance of securing the communication between the ...
6
votes
3answers
231 views

Any way to prove that two devices are in the same physical space, for authentication?

I need to come up with digital proof that two physical devices are in the same (approximate) location whenever that transaction occurs. This could be: A digital ID and the authenticator A consumer ...
1
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1answer
135 views

Unusual design aspects of AWS HMAC-based authentication, v4

I am designing a RESTful API in python. I want to use HMAC authentication. I could not find any suitable HMAC libraries, so I am rolling my own. However I want to use a well-known standard such as AWS ...
0
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0answers
96 views

Web and Intranet applications on different domains login to the same Database

Imagine a web application is on an active directory domain A, and the internal Intranet application is on domain B. There is a SQL server on domain A, and we can use Windows Authentication for the web ...
1
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2answers
162 views

Adequate prevention of distributed brute force attacks?

What are good ways to prevent distributed brute force attacks on my website? I think (not sure. if someone can assure me, thanks!) my site is secure against normal brute force attacks as I am using ...
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2answers
273 views

Secure android and server calls

I plan on adding an authentication system on my android app using web services. When my app calls the server using a POST call how can i secure the client can't find the URL and try to do his own ...
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0answers
63 views

How does disabling sign in upon confirmation make devise any more secure?

Referencing reasons given in this question http://stackoverflow.com/questions/18655334/avoid-sign-in-after-confirmation-link-click-using-devise-gem Devise does not allow the immediate sign-in of a ...
3
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1answer
149 views

Best approach to confirm email within mobile app?

Would appreciate your opinion on the options explored: a- Launch app and ask for a verification code that was sent to user email? b- Launch app by clicking deep link + verification code in the ...
3
votes
1answer
199 views

Can a Windows or Linux password be brute-forced on a public network?

I am at a hotel that has a public network. I have a Windows machine with a wired connection to it. "Network and Sharing" has network discovery on. No folders are shared except "Users", which is shared ...
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1answer
281 views

secure use of psexec?

As of March 7, 2014 PsExec now "encrypts all communication between local and remote systems, including the transmission of command information such as the user name and password under which the remote ...
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2answers
120 views

Why do I have to use multiple Keys for each direction and purpose?

I'm currently writing an examen about 'Lessons Learned in the IT-Security'. I already found some thing, which shouldn't be done. But right now I'm in trouble finding the reasons why not to do so. ...
0
votes
1answer
129 views

Two factor authentication using CVV and 3D secure code

While making online by Debit/Credit card, instead of using OTP (received on mobile), one can use a 3D secure code (verified by visa or mastercard) which is know to user. Should this qualify for two ...
0
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1answer
59 views

Mobile Game Auth Token Stolen [closed]

Basically someone sniffed my packets and stole my auth token/cookie for a mobile game I have played on for a year and spent thousands on (crazy I know) and now they are controlling my account through ...
1
vote
1answer
162 views

Best practices for usefully storing two factor authentication backup codes?

For a lot of web services offering two factor authentication, after setting up the system, you are given a short list of backup codes (one-time pads) that are around 7-10 characters long. These are ...
2
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0answers
63 views

HMAC-SHA256 Transaction signing [closed]

Can rfc6238 be used for transaction signing by concatenating the random seed string with transaction details (such as amount and target account number) ? Could a transaction authorization 8-cipher OTP ...
11
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1answer
231 views

Is TLS in Tor useless?

I am trying to optimize the Orchid Tor client library for my needs and noticed that every connection with every node uses TLS with turned off certificate verification. Actually there are no TLS ...
2
votes
1answer
60 views

electronic voting system

Was looking at cryptocurrency and how, as a non techy, to get involved when I began thinking about the security of it being developed to undermine the stranglehold bankers have on economy and the ...
0
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2answers
535 views

How to call webservice securely in Android

Hello I am working on an Android application in which I'm required to execute a few https web service calls. All my web-service URLs and Web API KEYs are in the code plus the IP address of the server. ...
2
votes
1answer
47 views

Kerberos Authorization host/service by host/service basis

I understand that Kerberos is for Authentication not Authorization, but Is it possible to get Kerberos to refuse to Authenticate certain users on specific hosts? I am currently using LDAP for ...
1
vote
2answers
123 views

Should the whole web *really* be encrypted? Isn't plaintext sometimes faster/better? [duplicate]

It seems to be commonly accepted nowadays that all internet communication should be encrypted. (For example, this is evident in how the HTTP 2.0 standard outright requires HTTPS.) However, I have a ...
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2answers
228 views

CAPTCHAs: How does simple math in cleartext prove you're human?

I'm intrigued that many sites use seemingly random numbers with a random operator as a security check to validate that you're not a bot. Forgive my ignorance in captcha technology, but what is ...
3
votes
1answer
748 views

what is a valid challenge for 2 factor authentication?

When designing password reset process: 1- Is a an email address or an assigned username a valid piece of information ( identifier) to ask for in two factor authentication? 2- How does two factor ...
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2answers
116 views

WinForm Application Security

I wanted to create a winform application that have a centralized security database. This application is portable, can be save to any PC and simply run the .exe to use, hence there will be many copies ...
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1answer
104 views

TLS/SSL and password transmission

I am still getting confused with security topics. At the moment the advantages and disadvantages of some of authentication methods are still not very clear. According to OWASP Authentication Cheat ...
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1answer
43 views

Is there any security concern if I sent the security token, issued from a trusted IdP, to javaScript?

Is there any problem if I sent the identity token, which has been issued from a trusted IdP, to javaScript code in order to use it in an Ajax call to a web method with authentication? Is there any ...
2
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3answers
205 views

Could embedding website links in an email lead to more hack attempts?

My organization currently sends out emails directing our customers to login and view information on a customer portal site we have developed. The content of these emails is usually pretty generic ...
0
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1answer
70 views

Application-Server connection security

I have this school project of mine that involves an app and a website that use the same database. The app serves as an administration tool for the website. Since it's made in C# and it's not as ...
1
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1answer
225 views

Is this a good approach to secure my REST API?

My application consists of a nodejs back end API but I am also developing a "reference" implementation of a JavaScript client, which is a backbone SPA. First of all; the API accepts only HTTPS ...
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0answers
38 views

Help with SAML 1.1 token request and response

I need to communicate with a service with SAML 1.1 based security and have a number of very basic questions. First I'm supposed to send a token request to the STS with a "Assertion token" in base 64 ...
2
votes
1answer
233 views

certificate authentication between apps

I have a .NET MVC Application which is hosted in IIS. Users of the Application will be company only and it will be access so it will be on the intranet - app wont be exposed via internet. Within IIS I ...
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0answers
44 views

Some very (very) strange issues in wpa handshake [closed]

I have a router (actually it is an android phone as an access point) with wpa2 AES encription, and I'm trying to crack the password with a very small word list. Strangest thing is, when I use ...
2
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2answers
97 views

Why do popular two factor authenticators use shared keys

Please correct me if I'm wrong anywhere, but from what I understand , popular mobile phone based two factor authenticators like Google Authenticator implements TOTP which uses a shared secret key that ...
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0answers
35 views

how can I authenticate a process from kernel side?

I would like to authenticate and integrity check a single process before its execution. That authentication and integrity checks should be on kernel side for obvious reasons. I was thinking to add ...
3
votes
2answers
260 views

Preventing Illegal Access to Webservice

Let me start off by saying that I read other StackExchange questions related to this and they weren't really able to answer my question. I have a feeling this may be an unsolvable problem, but I'm ...
2
votes
1answer
89 views

Protecting a statistics endpoint

When we download an application - it asks us whether it's ok to submit statistics, error reports to the vendor. Since this data is sent from the application to server endpoint - I am wondering how ...
14
votes
5answers
1k views

What is the difference between login throttling and temporary account lockout? [closed]

I am currently working on the redesign of a login page. I have initially suggested that login be throttled whereby pauses (incremental - in number of seconds) are introduced between each failed login ...
1
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1answer
614 views

PHP unserialize() object injection

So I came across with this authentication bypass security notice and the fix for it was just simply changing all serialization to json encoding. I am just wondering how this really is exploitable? ...
3
votes
1answer
482 views

How does the Fake Authentication Attack from aircrack-ng work?

I'm making a school project about the AP attacks and I'd like to know how does the Fake Authentication Attack from aircrack-ng actually work and how to prevent it? I read a lot of articles but ...
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3answers
140 views

Validating Credentials - Logic in Application vs Database

I am studying Web Application Security, A Beginner's Guide Paperback – November 3, 2011 by Bryan Sullivan (Author), Vincent Liu (Author) On pp 69, "Validating Credentials", they say you can ...
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votes
1answer
95 views

Authentication protocol based on hash function [closed]

Is it possible that Alice can authenticate Bob without using any secret information except her password, i.e they don't share any thing else. If so, how can I authenticate Alice and ensure the ...
0
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0answers
63 views

Detection of pass the hash

I have researched about PTH Attacks but yet found any solid way detecting it in a network.is there a way to detect a pass the hash ? analysing the windows message from the dcs or something ?
0
votes
1answer
224 views

What are the pros and cons of enabling 2 factor authentication on internal user workstations of an organization?

An organization has all the regular controls you can think of for network and systems protection from the 10 security domains. External login access to the organization's services is protected with 2 ...
6
votes
7answers
3k views

Techniques to make a login page safe without using SSL

I am developing a web page where people can write and comment things (no personal informations required) and I need to put a log in form so users can see all their actions on my web page. My idea is ...
0
votes
1answer
68 views

How much security would I lose if I enabled “easy enter” pins on an android device?

There is an option on android devices to unlock when the correct pin/password is entered, but without the user explicitly pressing the "done" or "enter" button. How much security does this remove from ...
0
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1answer
55 views

Is there a way to securely lockdown a website to an Iphone?

So with a typical website, perhaps the fastest and most effective (arguably) way to secure the site is to add a simple .htaccess and restrict by ip addresses: .htaccess DENY from ALL ALLOW from ...
2
votes
4answers
277 views

How is security of server's RSA private key is ensured?

We repeatedly hear news of hacking of passwords from PW database (server side) but nothing about hacking of server's RSA private key (not asking regarding finding p and q for a given public modulus ...
0
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0answers
54 views

Federation Service to Azure with users from trusted domain.

I want to set up a website on Azure according to the following requirements and are wondering if it is even possible? As a internal team member, I must be able to login to the site with Windows ...