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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5
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359 views

System for Mutual authenticaion and confidentiality

I am looking for a protocol where there needs to be mutual authentication between client and server. For example server should connect to a particular client only. That is client should authenticate ...
7
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1answer
462 views

OpenPGP Encryption / Decryption Process Using GnuPG

I want to know if my method of encryption can ensure the security of my data if my database was hacked as well as the authenticity of the data I am decrypting. I am using GnuPG's implementation of the ...
6
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2answers
966 views

How do I log everything a certain program is doing?

i have a program which is pretty simple. Its just a simple login form. Is there any possibility to log what this program is doing (maybe which file he is accessing and which website he is visiting ...
2
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1answer
75 views

Is there a drawback for local log in compared to server log in?

For developing a mobile app, there is a choice of storing usernames and password data in the device itself, or in a server (user will be authenticated to a server). Other than possibly the user have ...
4
votes
2answers
704 views

What flaws lie behind HttpContext.Current object i .NET?

I'm into extend a authenticating service and like to ask about the security perspective of HttpContext.Current. Let say you have a authentication serve websites / wcf and such (where http is ...
5
votes
3answers
3k views

Bell-LaPadula imlementation example

I'm currently studying the Bell-LaPadula model and i need to do an implementation as an example. I understand how the model works, but I have difficulties implementing it in a programming language ...
24
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4answers
7k views

https security - should password be hashed server-side or client-side?

I am building a web application which requires users to login. All communication goes through https. I am using bcrypt to hash passwords. I am facing a dilemma - I used to think it is safer to make a ...
6
votes
3answers
2k views

Why banking websites always ask me to authenticate my PC even after I'd chosen to “Remember my Computer”?

Why banking websites always ask me to authenticate my PC even after I'd chosen to Remember my PC? This is the case with all banking websites
1
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1answer
379 views

What does a Yadis / XRDS discovery session “look like” to the end user? How does it work? Is it relevant?

I can't wrap my head around how Yadis / XRDS would be used by a typical end user, or how it works so transparently? Considering that this technology isn't adopted by mainstream IDPs that makes me ...
7
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1answer
565 views

Inconsistencies found in OpenID Provider's HTTP Headers. Which one is the most secure that I should imitate in my STS, and Relying Party?

I'm comparing the HTTP headers of the various providers (LiveID, Google, Yahoo, etc) and notice a broad inconsistency in implementation on the sign in page, sign out page, and subsequent pages. ...
10
votes
3answers
301 views

Is there any conceivable reason to prevent a password change in an authentication system?

I connect to the VPN of another company with a company-specific username and password (they aren't giving everyone the same password to every company to access it or anything ridiculous like that.) ...
10
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2answers
623 views

Security of unencrypted wireless networks with authentication page

Some wireless networks, such as those offered by hotels and hotspots, are not encrypted (they don't require a pass phrase to connect) but have an authentication web page. For example, you connect to ...
3
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1answer
111 views

What are the implications of omitting the username in Secure Remote Password's verifier?

I consider implementing a Secure Remote Password (SRP-6a) verifier that omits the username from the x key hash. The intention is to allow authentication with multiple alternate user identifiers such ...
4
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2answers
731 views

Is there any drawback of using OAuth “pseudoauthentication” as opposed to OpenID?

I have seen posts that insist that OAuth is an orthogonally different thing from OpenID, because OpenID is about authenticating users, while OAuth is about giving access to certain services to a third ...
3
votes
0answers
444 views

When to move from Container managed security to alternatives like Apache Shiro, Spring Security? [closed]

I am trying to secure my application which is built using JSF2.0. I am confused about when do people choose to go with security alternatives like Shiro, Spring Security or owasp's esapi leaving ...
5
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3answers
207 views

Should we be checking password restraints on log in forms?

We have many restraints we put on users when they set up their password. These restraints include password length, characters they can or cannot use, the use of numbers and letters, capitalization ...
15
votes
6answers
7k views

How to implement multi factor authentication using a token generator?

I'd like to implement multi factor authentication on a few projects. Now the first factor would be username and password, for the second factor I would like to use a token generator. These tokens ...
14
votes
3answers
6k views

Is the Facebook login form using SSL without https in the URL?

If I go to http://facebook.com, I am not redirected to https://www.facebook.com. If it doesn't have https in the URL, can the login be secure? Usually I am redirected to an https page on other sites? ...
1
vote
1answer
290 views

What risk can untrusted WS-Federation metadata pose?

I'm adding support for SAML/ADFS/Azure ACS and read that untrusted metadata poses a risk. Considering that ADFS does background refreshes of the metadata, as do some RPs, can someone explain the ...
7
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3answers
225 views

Limiting the root certificate chain

I'm playing around with the idea of running a mini-CA with my (hobby) website, likely only used internally with a few select developers for internal emails, client authentication, staging/development ...
6
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5answers
654 views

Should a closed source website keep a secret key in its source?

Various APIs (such as Facebook or Amazon S3) require a secret key to authenticate access to the service. Obviously, if source code is public, the key should not be in the source! What about for a ...
3
votes
1answer
289 views

How do I use Windows 7 virtualization features to prevent transitive trust of admin credentials?

I am exploring using VMs to separate my administrative actions from standard user actions in Windows 7. The goal is to limit my risk and exposure when using "RunAs" to open an application or file ...
4
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3answers
1k views

storing the third party credentials in the database/some secure place

This question is about storing the third party credentials in the database/some secure place so that it can not be accessed by only authorized user. Our system connect to the third party system using ...
3
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1answer
1k views

“Extended Protection” primer and implementation guide to prevent MITM

Extended Protection (link) (link) is a feature in Windows 7 and Windows 2008 R2 that prevents certain MITM attacks. Does anyone have a primer (or explanation in plain English) what this feature is, ...
6
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3answers
165 views

Requiring Authentication to Exit

I've often wondered why facilities do not require authentication as a default on exit. Beyond the oblivious reasons: Fire safety policies would require a panic mechanism to override the access ...
8
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2answers
2k views

Benefits and drawbacks of giving an Administrator two accounts for elevated rights and another for daily use, such as email

Microsoft has long promoted the need to separate administrative accounts from regular use accounts, as shown with this guidance MSFT even went to far as create ADMINSDUser rights to put ...
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3answers
2k views

Any flaws in this security model for a REST web service?

I have designed a REST web service which requires authentication. It handles authentication in a manner similar to Amazon Web Services, namely: the user has an ACCESS_KEY (say, 'abcd') and a ...
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3answers
3k views

Authentication between multiple systems/platforms within the same web application context

Consider the following scenario: Web application is using two separate systems (they can share data/state through DB). First one is used for processing standard web stuff like http requests/responses, ...
27
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2answers
7k views

I just send username and password over https. Is this ok?

When a user's logging in to my site, they send their username and password to me over https. Besides the ssl, there's no special obfuscation of the password - it lives in memory in the browser in the ...
18
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2answers
2k views

Sending temp password when users first registered - is that good for anything?

One of our clients has sent us a list of security requirements. One of them was that registration does not including setting a password - once complete, a temp password is sent to the user, and the ...
9
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3answers
1k views

Length of CSRF Token

Is there any standard length of the token which should be used while generating the random tokens? Should we use the same standard which we use for generating Session IDs?
11
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4answers
1k views

Multiple CAs signing a single Cert/CSR?

Just saw this suggested on Slashdot So I've seen quite a few people wanting a switch to self-signed certs (who IMO mostly don't understand what making that secure actually involves), and an idea ...
7
votes
1answer
3k views

Ways to sign gpg public key so it is trusted?

I have a service through SSL which gives the user a code for a specific reason. I want to sign the code with the web server's private key (gpg --clearsign) and send the signed code along so that they ...
4
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3answers
736 views

Web Certificate invalidation - You might be connecting to a website that is pretending to be [Site name]

Recently while trying to log-in to Facebook this notification starts to appear: At first I ignored it (by pressing Continue), but it started to popup every time I navigate through the website! I ...
11
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4answers
12k views

What is the difference between authenticity and non-repudiation

I'm new to infosec and doing some reading. Not surprisingly one starting point was wikipedia. In this article, authenticity and non-repudiation are listed as 2 separate 'Basic concepts'. My ...
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2answers
1k views

LDAP Security problems?

I have installed many Active Directory (AD) based networks and have applied various standard security templates based on best practices, however I have never really looked at LDAP on a deeper level ...
6
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3answers
822 views

Attack vectors for brute-forcing website passwords

When talking about password security, a lot of discussion centers on the risk of a password being guessed in a brute-force attack. For websites where a user has registered an account, what are the ...
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3answers
186 views

What alternatives do email services provide when an account is hacked?

I am concerned about how does email services like Yahoo, Gmail, Hotmail etc provide security to their costumers and prevent their account from being compromised. For example, I have seen that if ...
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4answers
409 views

“Who the entity knows.” I've Googled for weeks and can't find results

A lecture slide mentioned methods of authentication, one of them being. Who the entity knows. But the lecturer said it was up to me to research it. I've Googled as hard as I can but to no avail :( I ...
7
votes
2answers
411 views

Why do some online banking sites (and others who desire secure login pages) sometimes add autocomplete=“off” on their login page input fields?

For example: http://www.natwest.com/x-user.ashx?redirect=trusteer.interstitial.url&condition=trusteer.enabled2%3Dtrue <input name="...." type="text" maxlength="10" ...
2
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1answer
1k views

How does a BlackBerry handheld connect to BES?

How does a Blackberry device connect to BlackBerry Enterprise Server (BES) for the first time? What are the security mechanisms used to protect against a rogue BlackBerry handheld trying to connect to ...
17
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5answers
69k views

Can someone steal money from my bank account if they know my IBAN and personal details?

To deposit money into your account, some websites require that you provide them with a lot of details about your bank account: name, complete address and IBAN which includes your account number and ...
2
votes
1answer
472 views

NFS and encrypted File systems

Can a NFS mounted file system be used for encrypted /home, and can the encrypted Home Directories be mounted/decrypted for the user when they login?
6
votes
4answers
644 views

Secure Web Password Fields + http to https redirect

I'm a software developer but I'm marking my niche in secure development. It turns out that while using WebScarab, I discovered that a popular user group site doesn't appear to properly take care of ...
2
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3answers
3k views

SSL verification of host name of https server

I recently found that a library I am using (specifically Apache HTTPClient) when is configured to verify the hostname of the remote server against the certificate's CN it just seems to be doing a ...
19
votes
12answers
3k views

Why do we even use passwords / passphrases next to biometrics?

In the last couple of days there were a lot of talking about passwords and passphrases, not only here, but on several blogs and forums I follow (especially after XKCD #936 saw the light of this ...
17
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3answers
3k views

Should I have a maximum password length?

I'm creating a webapp, and part of my authentication method is password length. Should I put one in place? (say, 50 characters?) Or should I just put a minimum length (Currently at 6). Are there ...
15
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5answers
832 views

Safe way to authenticate (multi-factor authentication?) while being monitored?

(I'm trying for a bit more precise answer, particularly with regard to multi-factor authentication, than I received for "Safe way to use a computer that has spyware/keylogger installed?" on SU.) ...
13
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3answers
543 views

Does signing out of a website ensure no-one can cookie hack?

If I click the signout link of a website, does this mean it is not possible for someone to hijack my cookie and sign in with it? While I'm logged in, is it possible for someone who has access to my ...
8
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5answers
307 views

How to verify new accounts against a known persons database?

I need to (try to) solve the problem of new account creation for a patient portal for a medical records system (electronic health record). That is, a way to activate a patient online and match her ...