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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2
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1answer
547 views

Is it possible to Spoof a TeamViewer ID?

I am using 2 forms of remote access to my Windows Server 2008 machine, both go to the Admin account since we only use it to host a Minecraft (MC) Server. Remote Desktop, that goes over a custom port ...
0
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1answer
99 views

Techniques for bypassing zero length check in javascript?

I am working on a node.js application that allows users to sign up for accounts using social media. When they do this an entry is created in our database with their email address, and a blank ...
2
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1answer
364 views

MySQL Authentication Hash Cracking

I'm currently conducting research regarding MySQL server remote authentication. I've captured unencrypted, uncompressed authentication packets between the client and the server where the username is ...
1
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1answer
97 views

Could Mental Cryptography(?) be useful to ordinary users?

I recently read about 'Mental cryptography' or 'Metal hash' process from this post: Mental cryptography and good passwords (via this message board ...
5
votes
2answers
307 views

Does a random set of secondary passwords add any security?

My bank uses this rather uncommon policy of authentication. They of course have a password, which has quite strong password patterns like "use alphanumeric characters and symbols, 8+ characters" are ...
0
votes
2answers
49 views

Application Authentication [duplicate]

We are developing an Android/iOS app. This app tracks the user's GPS coordinates and send them to the server along with other data. The integrity of the sent data is too critical for our service. We ...
-4
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5answers
201 views

What is the difference between session fixation and session recreation?

I have read that both of them are conventionally the same. But there must be a few differences which differentiates the two terms. Anyone please explain.
1
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2answers
129 views

Should I validate authentication form inputs?

I've got a login page with a form where they can input their account's email address and password. I'm doing the following things before even attempting to authenticate a user: Validating the email ...
2
votes
2answers
134 views

Password verification scheme (used in eg. MS Office) - more secure than just a hash?

Usual password verification schemes stores a salted password hash and the salt. If the hash is good and computational costly, it is considered secure. However an alternate version (used in Microsoft ...
16
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9answers
3k views

is there a safe way to login to my gmail account from a public pc?

Sometimes i need to use a public pc to access my gmail account, is there a safe way to login and keep my password safe in case there was a keylogger or a trojan on that pc? are there tools that could ...
7
votes
4answers
344 views

How to suspend a user from my website and prevent them from creating a second account?

I am an outsourcing person, not a programmer. My website is a shopping website (think eBay). My website will need a user suspension feature, in case a user violates the terms and conditions. The ...
10
votes
4answers
2k views

Location to store an encryption key

I'm building a secure system which stores messages on a server in a Postgresql database. The messages are stored encrypted with PHP's openssl_encrypt() function with the AES-256-CBC method. At the ...
3
votes
3answers
3k views

is it possible to create a login “key” out of a USB drive?

I was recently thinking about keeping my computer secure from physical access, and i decided that the safest way to keep my data under lock and key, was to do just that: Create a lock and key out of a ...
1
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0answers
53 views

Is the session key system that I use for authenticating users of my Google Cloud Messaging application secure?

The system works as follows: The user registers a username with the server over HTTPS, which generates a random 256 bit number, converts it to base 64, stores it on the server database alongside the ...
7
votes
3answers
7k views

Why is Chrome asking for the application-specific password and my account's password every time? [closed]

I enabled Google's two-factor authentication and found it ironic that Google Chrome Sync requires #1 You account password, and #2 an application-specific password. First of all, don't applications ...
-2
votes
1answer
59 views

Escape from <script> to cause a XSS (XSS when reflection is already under <script>) [duplicate]

I am trying my level best to solve this issue i am totally not able to create a XSS i still thinks it to be a vulnerability and i think it is exploitable. I am frustrated around it for 8 days . Please ...
0
votes
2answers
222 views

Why does ssh `known_hosts` file need server name?

When I push/pull repos on GitHub over SSH, sometimes there will a message about unidentified server and asks if I want to trust and add it to known_hosts. Apparently this is because GitHub has ...
2
votes
0answers
141 views

NFS IP spoofing

I am using VirtualBox: where the guest is an Arch ISO and the host Windows/Cygwin or a generic Linux. For sharing host folders, VB native shared folders is not an option (since the setup requires ...
1
vote
1answer
181 views

Is my authentication persistence system design secure?

This system is for a personal file upload and sharing web application made with PHP. When a user logs into the application, it has the option to "stay logged in" after closing and reopening their ...
-2
votes
2answers
910 views

How to completely password protect login into Ubuntu 12.10?

I am running Ubuntu 12.10 on my laptop and I would like to make a set up such that without a login password, no one would be able to login into my system. Currently it seems that one can, quite ...
2
votes
2answers
154 views

Authentication vs. Verification in General and with Biometrics

I am reading The Basics of Information Security, 2nd. Ed., Andress, Jason. He says on p.25, "Identity verification is a step beyond identification, but it is still a step short of authentication, ...
2
votes
1answer
99 views

Global user override - Uncomfortable

We have recently started a project with a service provider who is a little old fashioned in their ways. They provide a product but don't market it particularly well, so we (as users of the product) ...
3
votes
2answers
2k views

Secure REST API and Single Page App by using external OAuth 2 Authorization Code

I am trying to understand how to implement an OAuth 2 Authorization Code flow when having both a single page JS app and a REST API. The aim is to secure access to the REST API by offloading ...
2
votes
6answers
1k views

Does Username + Password + Pin improve login security?

I've been asked to add a feature to a website to require a pin for users. The site currently uses username and password. If a user wants to change their password they need to supply the current ...
3
votes
3answers
130 views

Is an emailed PIN for 2FA worthwhile?

To log in to our web app, our security team is insisting on 2FA as it is hosted on our internal network. The proposed solution is to have a standard username (email address) and password login, which ...
3
votes
2answers
281 views

How safe is to secure sensitive content by URL with MD5 hash and no other authorization?

Suppose we have website that use MD5 hash in URL like this: http://somewebsite.com/XXX/ where XXX is MD5 hash. Content of this website may have sensitive information like transaction details with ...
1
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0answers
87 views

Security considerations for RESTlike HTTP API of an embedded system

I'm designing a HTTP service for an embedded device and wondering if the following security concept is good enough: SSL(Up to Version 3) is enabled by default, TLS is not by limitations of the ...
0
votes
1answer
82 views

Secure log in without sending plain test to server

I know this question asked so many times, but here I am again with it. I am working on an application in which I need to log-in users but the question is it is not a good Idea to send user credentials ...
15
votes
8answers
6k views

Two-Step vs. Two-Factor Authentication - Is there a difference?

These days, there's pretty much three forms of authentication in general use on the web: Single-factor authentication, e.g.: PIN or password. Two-factor authentication, e.g.: Single-factor plus a ...
0
votes
1answer
117 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 ...
3
votes
2answers
116 views

One time passwords using Mobile phones [closed]

It is safe to assume that the majority of users accessing the internet also possess the mobile phones. So can we take advantage of this and relieve users of remembering any passwords. Instead of ...
0
votes
4answers
219 views

Security of a Random Password

i. If I choose random password of length say 15 from the alphabet set of size 94 i.e. from the search space of 94^15, is my password protected against all kind of threats? ii. Will there be any need ...
0
votes
0answers
96 views

Is this login flow via an authenticated email account safe?

I want to have users log in by entering an email, and then proving that they control that email. I only care that they do control the email, and so want to avoid add another password to the process if ...
1
vote
1answer
62 views

Verification code generation and expiration

I am trying to implement an application that includes registration, In order to register to the system the user shall enter his organization ID number let's say. To verify the user identity, a ...
21
votes
3answers
3k views

What are the disadvantages of implementing HTTP authentication in a web application? [duplicate]

I know that there are different types of authentication mechanisms available. One among them is the HTTP authentication. What is the danger in using this method compared to other methods?
0
votes
1answer
165 views

Idea for an algorithm to authenticate users with zero-knowledge-proof [need thoughts/review]

I have an idea for an algorithm. I don't know if I made any mistakes and need some extra thoughts/peer review on it. This would work as an (almost)zero knowledge proof for sending passwords that can ...
18
votes
1answer
117k views

How do I clear cached credentials from my Windows Profile?

Windows seems to be saving my credentials for a variety of applications (terminal servers, etc) and I'd like to purge this data. How can I backup and purge this data?
53
votes
10answers
15k views

Can I scratch off the magnetic strip off a debit card to only allow chip and PIN?

I have been robbed in the past by thieves using my HSBC Debit Card (issued by UAE branch) to purchase mobile phones and accessories by signing for the purchases. While the card has chip & PIN ...
0
votes
0answers
71 views

drupal external authentication - how to handle password?

I need to implement an architecture someone else designed. They have a drupal as user interacting component, and an external authentication module. To authenticate, from drupal, username and ...
2
votes
5answers
271 views

Can extra loading times on login attempts be a security threat?

I have a web application built with PHP with a login page where the visitor is supposed to enter his / her account's email address and matching password. Since I'm using the PHP native (slow) hashing ...
0
votes
4answers
207 views

Isn't it less secure to use something you are for authentication?

I have to think of this everyday when I close the doors of the shop I work in: A year ago we used to close the shop and arm the alarm using a key fob. This means the worst case scenario was that I ...
9
votes
4answers
271 views

What kind of factor is a physical signature?

I'm familiar with the basics of multi-factor authentication. Now I'm trying to understand how a physical signature, as written on, say, a check or a credit card receipt, would be classified: Is it ...
8
votes
1answer
1k views

Why would HTTP client only send authentication headers once an unauthenticated request was rejected?

The default usage of HttpClient and HttpWebRequest .NET classes is setting Credentials property and then asking the class instance to perform an HTTP request. If the target requres Basic authorization ...
0
votes
1answer
144 views

Should I use the root account on my Digital Ocean server?

I have set up an SSH key with Digital Ocean that is automatically added to any servers I create. Is it okay to use this root account for SFTP and daily use or should I create another user account and ...
4
votes
2answers
259 views

Two-factor verification without a mobile phone?

Currently, some services use a second layer of veficiation if logging in from a new device: Gmail and Facebook send a text or call with a code Facebook generates a code in the mobile application ...
1
vote
0answers
61 views

Protecting data on a remote device

Background I have am developing a service which consists in a small headless client device (e.g. OLinuXino) which will contain sensitive data. The device will be plugged to a remote network (maybe ...
3
votes
2answers
132 views

Link Layer authenticated encryption vs authentication

Many security articles discuss about adding an extra layer of security at the link layer by either authenticating the data at the link layer authenticating and encrypting it. If we have ...
2
votes
7answers
419 views

Is it wrong to root login with SSH?

I've long been under the impression that with unix, you should never login as root. Now I've started using Virtual Private Servers over at DigitalOcean, and some advice is to use SSH keys to login as ...
8
votes
1answer
2k views

Designing single-sign-on with JSONP/CORS?

I like the way that OAuth/OpenID can authenticate/identify a user from another domain, but only if the other domain allows it (presumably on the user's instructions). I would like to do something ...
1
vote
0answers
46 views

Does Ally Bank's trusted image system actually make login safer? [duplicate]

Ally Bank uses a 'trusted image' system to supposedly make login more secure. I can't find evidence that this is standard practice, so I'll explain it. When creating an account, you choose an image ...