Specific to the security of passwords: hashing, entropy, cracking, resets, lockouts, etc.

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-6
votes
1answer
26 views

How to attack on a web page to gain username and password?

In a situation where a web page is not using SSL and someone wants to attack to gain the username and password. How it can be done? Given the situations: Passwords are not stored in plain text. ...
1
vote
4answers
830 views

RatticDB for passwords is not encrypted. Is this good approach?

I am looking for a password application for storing passwords, and RatticDB have a web interface and SSH access is planned, which are exactly the features I am looking for. However, they write that ...
3
votes
1answer
32 views

Password security when connecting to ldap with rails application

How do you store a username/password securely in a rails app when using it for many ldap searches? The connection in the app requires ldap_bind_authenticate(Net::LDAP.new, username, password) ...
6
votes
3answers
6k views

Is it safe to store password in HTML5 sessionStorage?

I am trying to improve the user experience on registration by not requiring the user to retype their password if validation on other fields fail. There are a few ways to implement this, example using ...
2
votes
2answers
75 views

How significant is the risk in having someone email/IM an htpasswd hash?

I need to set users up for subversion access, and we're currently stuck using htpasswd for our credential storage. If a user sends me an htpasswd record via email (or GChat / off the record?), what's ...
1
vote
0answers
96 views

Deobfuscated Malicious PHP Code Comprehensively [closed]

I found 3 php files in a htaccess-password-protected upload folder on my server: 1. default_folders.php 2. factory.php 3. HMAC.php Each of them contains a variable string, eg: ...
1
vote
1answer
131 views

How secure is a password app that stores both the password and two factor secret in one place?

Take for example 1Password, that now can store your password and one time password secret in a single place (your 1Password vault). I know it isn't truly two-factor anymore, but how much better is it ...
12
votes
7answers
2k views

Why don't we reward users who choose strong passwords? [on hold]

Suppose there is a web property that has some sort of reward system or commodity that its users desire. It could be reputation on Stack Exchange-like sites, rank badges on message boards, or add-on ...
2
votes
2answers
63 views

Password strength with grouping of characters

For better readability and easier entry of long passwords I thought it was a good idea to group these using a fixed separator like so: f6hyF.75zaG.FhtYb.1a63h Assuming this structure of the ...
2
votes
1answer
83 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 ...
1
vote
2answers
273 views

What impact do the frequency of password resets have on password reuse?

Wondering if there's any research behind the most common password reset cycle I've seen of 90-days, and if there's any research that gives any insight into how to optimize password resets to reduce ...
4
votes
1answer
60 views

Re-display password in registration form good or bad?

When a user tries to register and the data he submits are not right such as bad email, or weak password, we would display the registration page again to him with the data he just submitted along with ...
0
votes
0answers
33 views

Is it possible to pre populate a password (stored as hashed form in the db)? [on hold]

I think this is a bad practice, but ignore that for now. If I have a login form (username/password and a remember me checkbox). Is it possible to pre populate the username and pwd fields if a user is ...
0
votes
1answer
47 views

Gnome-keyring iteration count location

I know that Gnome-keyring hashes master password between 1000 and 2000 times. It picks random number. I would like to ask where does it save this number, what is the location of that file? As far as I ...
1
vote
1answer
72 views

Free VPN and bank password security [on hold]

For some odd reason my online banking fails when on mobile data. It works fine on wifi. In times past I used nokia's Xpress browser to route it through their servers but it is no longer available for ...
-1
votes
2answers
5k views

Hydra https-form-post

I have never experimented much with online password crackers. I attempted to use Hydra today on this website www.athena2.harker.org and I keep getting false positives. This is what I have done so ...
1
vote
1answer
58 views

Password-less authentication in web apps - How safe it is?

I read a long time ago this article about how could work a Password-less Authentication System, which sounded to me like a great idea. I even built it in a small fun little application for fun. To ...
2
votes
1answer
77 views

Plain text password emailed back during registration [duplicate]

I would like to ask if the passwords in the database are not encrypted if during registration I am receiving plain text password with username.
16
votes
3answers
2k views

Why do some bank websites use passwords that are not case sensitive?

It was recently brought to my attention that a certain big bank website allows users to log in with passwords that are not case sensitive. After confirming this, I checked other websites I bank with ...
3
votes
4answers
205 views

How do clients enroll using SRP?

From what I understand, one of the benefits or Secure Remote Password (SRP) is that is does not require reliance on certificate authorities. In a scenario where clients need the ability to register as ...
2
votes
1answer
951 views

How secure is automatic authentication in Skype?

How secure is checking the automatic authentication option in Skype client? What if I sign in with Microsoft account instead of Skype id? What if both accounts are merged? Is there any documentation ...
1
vote
1answer
60 views

Has anyone used this ICLOAK USB device? [closed]

Does anyone know about this ICLOAK USB device? Opinions or how well they work? I'm looking for a security solution when I'm using PCs where I work. Occasionally we have to log into to web sites, ...
1
vote
1answer
79 views

Storing server generated passwords

There are some applications that generate passwords for you. Consider a case where you sign in via Facebook, the application (let's call it NEWAPP) verifies your sign in on the server using FB tokens ...
4
votes
2answers
286 views

Password entry on OS X and keyloggers

There's several places in my ‘personal security infrastructure’ (is there a better phrase for that?) where I find myself typing very important passwords into text-fields on OS X (for instance, ...
47
votes
10answers
11k views

Why does the user pick the password?

Almost every web service I can imagine has the user pick the password. Why is this? Couldn't the system choose a better password? It doesn't have to be some complicated mess; see ...
0
votes
0answers
13 views

What are alternate options for PBEWithMD5AndTripleDES with SecretKeyFactory.getInstance( ) for encrypting Image files? [closed]

Are there any alternate options other than PBEWithMD5AndTripleDES. As we are aware MD5 is not considered secure enough a hashing method. My requirement is to implement Password Based Encryption (PBE) ...
23
votes
6answers
4k views

Source code as password

Passwords with a mixture of letters, numbers, and special characters are sometimes hard to remember. Is it secure to instead use a small amount of memorable source code as a 'passphrase'? As an ...
1
vote
1answer
129 views

Passwords propagation, Password Trend and Word Generator in Human Mind

Some passwords like "123456", "admin" are outrageously popular, so are the leet transformations and concatenation of digits. The users seem to pick up the password suggestions or just copy the ...
7
votes
2answers
312 views

An analysis of storing hints for passwords?

What are the security implications of asking users to provide password hints? What are best practices for storing user hints? What research has been done on using user-supplied password hints to ...
2
votes
3answers
135 views

Storing random initial (one-time) passwords in plain text

I manage a vendor app that issues accounts (with passwords, of course) to end users. From what I can see, final user passwords are stored properly. My concern is the initial account generation and ...
2
votes
2answers
90 views

Single-use password as the default authentication method?

The crazy password requirements (joke1, joke2) lead me to a situation where there is no way for me to memorize the passwords to the several sites that make those requirements. The result is that ...
4
votes
2answers
173 views

Is it safe to store a passphrase encrypted SSH key in git?

I have a bunch of servers that need to access somewhat sensitive data (passwords for ftps, api keys, etc). Currently I copy a plaintext file back-and-forth between the servers via ssh and encrypt all ...
2
votes
1answer
64 views

Securely storing passwords using PHP5

Starting note: After going through some articles and answers posted on SO related to storing secured passwords I'm still not sure whether my way of thinking is applicable to todays reality. I'm ...
2
votes
1answer
166 views

How to find passwords in memory (password managers)

I’m trying to figure out if password managers such as last pass store passwords in plain text (or hash values that can then be decrypted with the master password) in memory after a user logs into the ...
4
votes
3answers
490 views

Method to integrate Touch ID in iOS apps

With the recent announcement of Touch ID APIs for third party apps, I am wondering how can we leverage this feature to perform secure transaction ? I am looking for a method to use Touch ID in my ...
4
votes
1answer
48 views

Countermeasures for a family-member attack on a password reset procedure

Given an account reset procedures, there are usually some recovery questions, and in better implementations a link will be sent to confirm the password change via email or SMS. Therefore, the attacker ...
0
votes
0answers
7 views

Value of S and r in Fiat-Shamir Protocol [migrated]

In the book Cryptography and Network Security by Forouzan,in chapter 14, Fiat-Shamir protocol, its mentioned that two large prime numbers p and q are chosen and kept secret. However n=p*q is made ...
31
votes
5answers
6k views

If a web site shows me what my password was changed to, is it stored as plain text?

I just changed the password on a school-related web site. After completing the change successfully, the next page showed what the password was changed to. Can I conclude from this that the password ...
4
votes
2answers
193 views

Password strength metrics

In the question Source code as password I suggested using a combination of entropy and as @Lawtonfogle put it 'meatspace difficulty'. As suggested in the xkcd comic correct staple horse battery is a ...
1
vote
2answers
46 views

Do I need to set maximum characters length for password using bcrypt?

I using bcrypt to create a password hash and in the php documentation it says Caution: Using the PASSWORD_BCRYPT for the algo parameter, will result in the password parameter being truncated to ...
22
votes
10answers
4k views

Password Management within an Organisation

Within an organisation there are many passwords such as those for root accounts on servers, hosting accounts, router logins and other such things, that need to be kept track of. I know in some ...
15
votes
6answers
3k views

Managing website passwords for small team

I'm part of a small group of people who manage a website and the server it runs on. We have many accounts with third-party websites or services that multiple people on the team need to access. What is ...
3
votes
0answers
80 views

What is the most efficient password scheme in terms of entropy per convenience [closed]

Although the main points are right, but now six words are needed, which is both inconvenient to remember, and inconvenient to type. My question is, has then been any case studies on the most ...
0
votes
2answers
44 views

Full Disk Encryption, Single User System: User/Root Passwords required?

Are there any security issues of having no (or weak) passwords for user and root account on a single user system with full disk encryption (except boot partition)? Assuming no SSH server is running, ...
2
votes
1answer
54 views

Why use a password manager to protect browser logons when e-mail client is neglected?

Friends use password managers like lastpass or dashlane which have plugins for the browser, but not for the email clients (thunderbird or livemail). But surely the email password is the Achilles heel ...
4
votes
3answers
260 views

Best way to store/retrieve sensitive key files?

We have our web servers running in AWS EC2. We have about 30 API Keys/passwords/etc (sensitive data) which is set in the environment for our app to use. Whenever we deploy, we start a new server ...
1
vote
1answer
52 views

All UTF-8 characters for generated passwords

Why do a lot of password generators don't generate strong passwords including chinese, arabian...-characters? All generators I saw, also the included one in my password manager keepass, just output ...
4
votes
2answers
258 views

Should email verification be followed by password-based login? Why?

[This is a duplicate, considered off-topic at http://stackoverflow.com/questions/26564992/should-email-verification-be-followed-by-password-based-login-why] A typical account creation process seems ...
7
votes
2answers
1k views

When taking ownership of a TPM in Windows 7, how is the SRK derived from the password?

When you take ownership of a TPM in Windows 7 you encounter a screen like this: Based on this document, it is my understanding that completing this dialog box somehow results in the generation of ...
0
votes
2answers
96 views

Can I save passwords in my app securely and retrieve them without asking for a master password? [closed]

I need to save some passwords used on my app, so the user doesn't have to input them so often. I'm trying to understand how this is done. I imagine to keep them safe they should be encrypted however ...