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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Mobile Game Auth Token Stolen [on hold]

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 ...
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1answer
27 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
36 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 ...
9
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1answer
142 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
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1answer
46 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 ...
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2answers
60 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
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1answer
22 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
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2answers
104 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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3answers
116 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 ...
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1answer
701 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
42 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
51 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
35 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 ...
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3answers
181 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 ...
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1answer
46 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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0answers
88 views

Found a bank account number vulnerability. How serious is this?

I believe I have identified a security vulnerability in my credit union's website which would allow a malicious attacker to determine whether an account number is valid or not. Given that the total ...
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0answers
94 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
10 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 ...
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1answer
57 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
30 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
70 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
28 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
170 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
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1answer
40 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 ...
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0answers
30 views

Why hydra doesn't return a valid username&password with a valid supplied username&password [migrated]

I'm just trying out hydra to test this case. I have php file running with apache web server named 'index.php' as following: <?php $login = 'admin'; $password = 'r00t'; ?> <html> ...
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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 ...
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1answer
100 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? ...
2
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1answer
106 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
83 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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0answers
23 views

Client Cert Auth [migrated]

I would like to setup Client Certificate Auth with my tomcat. I've configured the webapp for this auth and this is my tomcat config. I'm using Windows PKI for my certificates so I have pfx files. The ...
-3
votes
1answer
48 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 ...
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0answers
45 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 ?
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1answer
63 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 ...
5
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6answers
2k 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
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1answer
50 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 ...
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1answer
38 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
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4answers
191 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 ...
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0answers
25 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 ...
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1answer
60 views

SSH and shared secrets

There was a question on a quiz I took, about different authentication methods that SSH uses. The answers were combintions of the following four: username/password public key authentication shared ...
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2answers
54 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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2answers
81 views

Effective Free and Anonymous Web Form Encryption

I've got a website and I would like the users to be able to login securely but I don't want to spend any money on SSL / certificates and I would like to stay anonymous i.e. not give the certificates ...
2
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1answer
31 views

SIP Provider stores credentials, is it required for some SIP phones?

My SIP provider stores my SIP call time password as AES encrypted in stead of hashed. I understand that SIP authentication has the capability to NOT store the password, and in stead store a ...
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0answers
16 views

How does WebID fit in the SAML picture?

How does WebID fit in the SAML picture? Are they related or completely unrelated? Can they work together? If yes, what are the benefits?
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2answers
70 views

Legality of cookie(set by other sites) tracking

I have created a website A which asks username & password, there exists another closed source website B which again asks for login credentials. A user uses both these websites .I want to ...
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2answers
91 views

Open email accounts on public computers

When I use a public computer at a certain location, logging into the workstation and going to a site like gmail.com (to check my email) I find that another user is already logged in. Same happens for ...
3
votes
1answer
100 views

How is a Tor hidden service authenticated based only on trusting the address?

While being fascinated by how it is possible to create hidden services with Tor, there's a few details around the address collision issue I can't seem to wrap my head around. Quote from Hidden ...
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1answer
96 views

Authenticated Diffie Hellman Key Exchange

It appears that the textbook version of Diffie-Hellman is susceptible to man in the middle attack and the use of digital signatures could prevent this attack from occurring. Digital signatures could ...
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1answer
73 views

What's the typical approach to caching invalid authentication attempts?

Clients (actually software pieces developed by some random dudes all over the Internet) are authenticating on a web server using "basic" authentication scheme and to do so they are passing the ...
2
votes
1answer
43 views

BTLE pairing: Where does the code come from?

When trying to pair 2 bluetooth LE devices (e.g. 2 iPhones), a popup shows up that requires to input a code displayed on the other device. I am aware of the concept of out-of-band authentication, and ...
6
votes
4answers
1k views

How to prove Bob has received Alice message

I have read up on Digital signature and it is stated that it provides non-repudation. Assuming Alice signs the message using her private key and sends it to Bob, Bob can use Alice's public key to ...