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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30 views

How to sync with multiple authentication services?

I have a peculiar case to work on. We are using a proprietary product which supports LDAP integration. However, it can be configured to use only one LDAP service. (most of the products are shipped ...
1
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2answers
77 views

VPN over HTTPs for a web service only

I have a web service (PHP & MySQL on Ubuntu 12.04) running in a corporate intranet. I have also connected it to internet through a firewall letting incoming connections on HTTPs only (port 443). ...
0
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1answer
39 views

Mobile authentication

I'm currently working on an Android app in which I want to authenticate someone against an REST API. I want to do this as secure as is (cost-)effective/possible/userfriendly. I've been looking around ...
7
votes
1answer
253 views

How to stop password recovery attempts on accounts?

I am using social networking services such as My Banking GMail PayPal Facebook Twitter Google+ LinkedIn All of these services text messages me a six digit code to login from anywhere, even a ...
0
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1answer
49 views

SSL Mutual authentication Fails

When I try to establish a Mutual authentication between server and client, I am getting the errors below. The timing between the server and client is exactly same and also the certs are proper in ...
2
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1answer
63 views

Where do browsers store HTTP Authentication details

Where do browsers store HTTP Authentication credentials ? If I gain access to a browser, is there some place I can look where all HTTP Authentication details would be available? In most browsers, even ...
2
votes
1answer
230 views

How authentication using md5 works in this ospf example?

I am trying to understand how md5 authentication works between this 2 cisco routers. The password is cisco in both routers. In the output in the field Auth Data: the hash is different in every packet. ...
2
votes
1answer
105 views

Random token and email confirmation key of 10 chars sufficient?

I have a function that returns random unguessable keys with the following characters: a-z A-Z 0-9. I have set the key length to 10 and I am using that for my form tokens to prevent CRSF and I will be ...
-3
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3answers
169 views

Two-factor authentication Without Mobile Phone

Two-factor authentication is based on the notion of “something you know” and “something you have”. Is it absolutely necessary for having your mobile phone involved in two-factor authentication, which ...
3
votes
1answer
86 views

What stops an attacker from tampering with data sent during the SSL/TLS handshake?

On this page, it says the first thing sent is the SSL settings, such as version, and cipher settings. If the attacker, say, wanted to change the encryption method used, what makes this not possible?
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2answers
70 views

In two step authentication, should I check step 1 before proceeding to step 2 or check both at the end?

I asked this question first on Stack Overflow but it was suggested that Information Security would be a better place for it (pretty obvious in hindsight). ...
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3answers
73 views

HTTP authentication: identify the client

We have a web-site, where each user has to log-in to access a private area. Inside the private area, there are some information about the user, a profile, including some sensitive information (home ...
2
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1answer
98 views

Windows Authentication to protect API

One of my colleagues has a web api call that is checking that the user is logged in and his token matches what is in session (thanks to all of you for your help). Let's say this is layer blue. After ...
4
votes
2answers
362 views

Trustworthy Android recovery image that allows rooting?

I have an unlocked but not rooted Android device (Nexus 7 2013 WiFi "flo", legitimately unlocked using fastboot oem unlock from an x86 computer). Neither adb root nor adb shell followed by su let me ...
0
votes
1answer
67 views

What is a AUTH-KEY in the security of the computers?

I don't know if this is the right section to post my question and if it is not I apologize. I'm studying security in computers and in particular the URL Spoofing. I understand that a form of URL ...
0
votes
4answers
157 views

Wifi deauth attack - Difference between Aireplay and MDK3

I am currently working on some Wifi related security issues, and something appeared to me. I have an Open Wifi network, to which a client connects. I try the Deauth attack from Aireplay ...
1
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2answers
33 views

is IPSEC Authentication between local domain hosts a part of normal behaviour in a Windows network?

I am seeing lot of IPSEC Authentication messages in eventlogs of Windows domain hosts. I was wondering if this - setting up IPSEC connections between domain workstations is a part of normal Windows ...
5
votes
3answers
181 views

Separation of secure login steps

I'm redesigning a login screen for a financial services application. Currently, this requests user ID and password, then (on the same screen) 2 digits from a 6-digit PIN are requested - these 2 digits ...
1
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3answers
204 views

Is it good idea to rely on Mifare UID for security/authorization reasons?

Several systems rely on using UID of smart card for identification/authorization. For example database stores list of smart card UIDs and corresponding privileges. Given that today there exist cards ...
2
votes
1answer
76 views

Facebook oAuth2 for Javascript client application

When implementing Facebook login using oAuth2 (the Javascript version), I receive an access token back from the Facebook auth server. So far so good. The problem I have is that I want to implement a ...
-1
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1answer
21 views

Symmetric Mutual Authentication Case

I have an interesting question about mutual-authentication with a symmetric key. Is this scheme possible and secure? And is this scheme a mutual-authentication scheme? Alice -------"Im ...
10
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3answers
898 views

What is the risk and mitigation of accidentally typing a YubiKey password in an open forum?

I have a YubiKey in my laptop (for testing) and accidentally broadcast my YubiKey password out to the Internet. Since this is only a test key, and has no access to anything of value, here are some ...
0
votes
1answer
96 views

Is this email being sent directly to sender?

I am receiving odd emails from a health insurance plan contact. Is this going to an alternate address first? From Kelly Trace Tue Jun 17 05:44:13 2014 X-YMail-OSG: ...
6
votes
4answers
400 views

Is it secure to use *no authentication* for services listening only on localhost?

I have many applications installed on my server that use a webui frontend to control the application. Since I am the only user of the server, I usually bind these applications to 127.0.0.1. As the ...
1
vote
1answer
106 views

automatic connection from LSASS to different IPs. Is this the usual behavior?

I'm using windows 7. firefox 22. connecting through a regular residential wifi router. In the last month I've noticed that when I connect to the internet and once in a while my firewall indicates me ...
1
vote
0answers
33 views

Security for message queue in ActiveMQ

I am using ActiveMQ and WSO2 for my application. I need to protect my queue to restrict posting of messages by anonymous users(I need to protect my queue with some password). I know, there is a ...
4
votes
1answer
325 views

Authenticate users through Google using only an OAuth2 access token

I have a question about having users logon to my service using their Google Credentials. I've gone through the Using OAuth 2.0 for Login documentation provided by Google. The documentation mentions ...
2
votes
1answer
186 views

Facebook iOS SDK Authentication

The Facebook iOS SDK only needs your bundle & app IDs of your iOS app to match those of your Facebook app. If I find out an app's app ID, can't I just create another iOS app with that app's ...
1
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1answer
134 views

Bypassing CVE-2010-4478 (J-PAKE parameter validation) in OpenSSH 5.1

Did anyone successfully exploit CVE-2010-4478 in the past? This is insufficient validation of the J-PAKE public key parameters in OpenSSH up to 5.6. I'm dealing with a vulnerable machine running ...
20
votes
6answers
2k views

Web authentication - password vs key file

There is a corporate web mail site (PHP + MySQL) for limited numbers of users who are employees of a company working remotely with the corporate web portal. Each user has a login and password. I'm ...
3
votes
2answers
61 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 ...
0
votes
2answers
58 views

Best practice for two WebServices that have to authenticate with each other [closed]

I have two WebServices that are hosted by two different applications. Both Applications access each other's webservices: Now both WebServices have to authenticate with each other. Different ...
1
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1answer
430 views

Transparently authenticating users or devices on mobile devices

I have an interest in using EAP-TLS to authenticate both users and devices separately on mobile devices (phones, iPods, tablets, etc.). My issue is how to delineate between user authentication and ...
1
vote
1answer
59 views

Secure way of opening web page from iOS without need of logging in

I am developing an iOS application and web page, both use same Parse backend. Web page contains some functionality that is not available in the iOS application. Therefore I would like to present the ...
3
votes
3answers
78 views

Is login limiting still needed if we employ multi-factor authentication?

The status quo is that most online websites limit login attempts per IP address, or even per account since some attackers possess huge amounts of IP addresses. OWASP declares: When multi-factor ...
1
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1answer
80 views

Implementing password-reset in a web application by authtoken over email

I think I have a basic understanding of security concerns, but I feel like if I don't know everything, I'm going to implement lousy solutions. Below is my current strategy; Have I overlooked obvious ...
1
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1answer
84 views

How could the Skype app log me out from my Facebook account on OSX? Isn't this a huge security flaw?

According to this post (and to my personal experience), installing the Skype app on Facebook and the Skype client on OSX Mavericks will result in you being logged out from Facebook every time you ...
1
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0answers
18 views

Cross-Site-Scripting(XSS) attempt from OpenID stackechange? [migrated]

Today I was trying to login into stackechange that I ecounter the following problem. My questions is, was someone trying to steal my session id? Do I have to worry about password of my email that was ...
0
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1answer
49 views

ChangeCipherSpec Authentication

According to RFC 5246, 7.1. Change Cipher Spec Protocol: The ChangeCipherSpec message is sent during the handshake after the security parameters have been agreed upon, but before the verifying ...
-1
votes
1answer
36 views

What are relation between security services? [closed]

message confidentiality message integrity message authentication non-repudiation The 4 services are related in the sense that one services often implies/provides another. Indicate for each service ...
0
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0answers
49 views

CAS protection against CSRF attacks

A website based on Apache Struts uses central authentication service (cas) for login. I'd like to know if additional csrf protection needs to be provided with Struts in case cas doesn't provide that. ...
5
votes
1answer
538 views

A Secure Cookie Protocol

As title says I'm trying to implement a secure cookie protocol HMAC(username|expiration name|data|session key, sk) It seams that session key is not constant during whole application session ...
9
votes
3answers
872 views

HMAC Based Request Signing - Storing the Salt

I'm working on a (non high security) project that currently isn't live but might go live at some point. We have a REST API (implemented using Restlet and Neo4j) running on a server and an Android ...
2
votes
3answers
620 views

Website login protection with chrome extension

Right so I'm developing very private systems recently, and I'm looking into admin login protection. I'm a PHP dev with essential knowledge of js/jq. While I handled most of the stuff so far, I'm ...
1
vote
2answers
596 views

Implementing SRP Challenge login system *with SSL* (Using PHP)

My question: Anyone knows how to implement SRP / Diffie-Hellman authentication in PHP (or if this has already been done)? (Some details) I'm using CodeIgniter with TankAuth (both latest version) ...
0
votes
1answer
37 views

Does a username/password + emailed PIN count as strong 2FA?

To log in to a enterprise 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 ...
28
votes
2answers
25k views

Token-based authentication - Securing the token

I have developed a backend REST API for a mobile app and I am now looking to implement token-based authentication for it to avoid having to prompt the user to login on every run of the app. What I ...
2
votes
2answers
99 views

Is this token based web service secure?

Note: Original question asked at http://stackoverflow.com/questions/24012390/is-this-token-based-web-service-secure but here seems to be the right place for it. The company that I current work for ...
5
votes
1answer
157 views

Cascaded Sudo for privilege elevation

I intend to use the least privileged user to do a given task. The issue is that it involve a kind of responsibility chain and translate as a sudo chain in my scripts, spreading the overall task in ...
2
votes
1answer
66 views

Using OAuth as Security For E-Commerce Sites

I need some help in understanding the security risks if I want to use OAuth 2.0 (Facebook, Twitter and G+) as standard login provider for an E-Commerce site. Keeping in mind that I will not be saving ...