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Questions tagged [password-management]

The functions performed by the person or processes responsible for security of passwords on a given system.

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27
votes
6answers
4k views

Hash function change

I have user account passwords stored in a database using an unsafe (old) cryptographic hash function. What is the best/usual approach to changing password hash function? Only two ideas come to my ...
2
votes
3answers
158 views

How to make an outbound request to users to update their passwords?

Clearly it works best if the request to update a password happens as a response to an inbound request to access a known system, but how do you make an outbound request to users to update their ...
4
votes
1answer
2k views

Why do some large companies still store passwords in plain text/decrypt-able format? [closed]

In the last couple of weeks I've come across two fairly large companies who seem to not have stringent password security: Tesco - they store passwords in an "encrypted" format, yet they can decrypt ...
3
votes
3answers
215 views

In what situations are web services required to protect confidentiality of user information?

I know that if a web application needs to be PCI-DSS or HIPAA compliant the user personal identifiable information (e.g. user password, etc) needs to be kept confidential. Under what other situations ...
5
votes
3answers
508 views

Are there any regulations against financial companies storing passwords in plaintext?

A bank that I use stores my password in cleartext or perhaps using reverisible encryption, which is just as bad. I know this because when you click "Forgot your password?" (or similar) link, it ...
3
votes
1answer
238 views

How should I store a password to allow people to enter single characters from it? [duplicate]

Possible Duplicate: How do some sites (e.g. online banks) only ask for specific characters from a password without storing it as plaintext? Some banking applications ask for random letters from ...
1
vote
1answer
727 views

Securely tell the user his password in new WHM/Cpanel account creation?

I understand it's not safe to send passwords via email but when accounts are created via WHM/Cpanel, I have to let the user know what password I created for them. How can I relay the password safely?
1
vote
3answers
577 views

Logic for generating Strong Password?

I try to encrypt password using MD5 but there are decoders for MD5. So I'm worried about encryption of password for big website. Is there any logical suggestion or step function to generate strong ...
2
votes
1answer
1k views

How can passwords be stolen from Yahoo?

I always understood that servers don't actually store user passwords. Instead, they store hashes of passwords and then they validate the user input by applying the hash function, then compare the ...
95
votes
8answers
13k views

Can anyone provide references for implementing web application self password reset mechanisms properly?

We are implementing self password reset on a web application, and I know how I want to do it (email time limited password reset URL to users pre-registered email address). My problem is that I can'...
1
vote
2answers
472 views

Seeking advice on how to build a box to brute force hashes? [closed]

I work in a startup security firm, and I need to build a GPU-based to brute force password/hashes, which can be used to validate password strength and test hashing algorithms. I expect some high ...
1
vote
2answers
218 views

is it appropriate to set restrictions on a user's password? [duplicate]

Possible Duplicate: XKCD #936: Short complex password, or long dictionary passphrase? Im developing a website and am curious as to the current trends in the nature of passwords. Is it good to ...
5
votes
3answers
1k views

Trying to understand password hashing

I am trying to get a grasp of password hashing. Back in the days it seemed so simple, just MD5(password + salt) and you are done. Then md5 was proven to have collisions so people started moving to ...
0
votes
0answers
282 views

What is the most secure way to recover password online? [duplicate]

Possible Duplicate: Can anyone provide references for implementing web application self password reset mechanisms properly? I have website which sends generated password to any person who request ...
44
votes
6answers
4k views

“Real” Salt and “Fake” Salt

During a Q&A period at DEFCON this year, one member of the audience mentioned that we're using "fake salt" when concatenating a random value and a password before hashing. He defined "real salt" ...
-1
votes
1answer
745 views

What encryption hash function I should use for password securing? [duplicate]

Possible Duplicate: How to securely hash passwords? What is the best encryption algorithm? MD5, SHA1, SHA2 or maybe something else? Can you explain me why?
0
votes
2answers
4k views

Long Passwords: How are they more secure? [duplicate]

Possible Duplicate: XKCD #936: Short complex password, or long dictionary passphrase? How are long passwords more secure? The only situation in which I can accept long passwords are more secure ...
5
votes
4answers
4k views

Send new password by email is bad practice but what to do if user forgot his password?

According to http://plaintextoffenders.com/post/7006690494/whats-so-wrong-about-sending-a-new-password-in it's bad so what to do ? Just ask him to set a new one ?
2
votes
3answers
3k views

Why would you do a password audit

I was thinking last night after reading an article about pen testing and security audits, why would you get a list of all the passwords for the company you are auditing and put them through a piece of ...
0
votes
1answer
2k views

What's the idea behind requiring users to change password periodically? [duplicate]

Possible Duplicate: How does changing your password every 90 days increase security? Some sites require users to change their password every x days. For example, at least 3 online banking system ...
5
votes
1answer
3k views

Which cross-platform password managers support encryption using a hardware token?

I am looking for a really secure password manager and I really like the fact that Password Safe supports encryption/decryption using a Yubikey programmed in challenge-response mode. Read more here: ...
4
votes
5answers
198 views

Are there any academic articles on how people handle their passwords?

Are there any academic articles on how people handle their passwords - how many they use in total, how often they change it, whether they commonly store it somewhere or just remember them and so forth?...
4
votes
6answers
3k views

Password sent via email upon registration

I was wondering what the pros and cons are about sending an email with the password to a user registering on a website (like wordpress.org does). They use pretty good passwords (12 characters long ...
19
votes
2answers
13k views

FOSS Enterprise Password Management Solution [closed]

Can anyone recommend a F/OSS enterprise password management solution on/around the same level as something like Cyber-Ark? Specifically, something along the lines of a standard password manager, (...
19
votes
3answers
2k views

Are passwords in memory?

I have an encrypted HDD (dm_crypt). That's why I store my passwords in a simple text file. I usually copy/paste the passwords from it. Ok! Q: If I open this text file then it goes into the memory. So ...
2
votes
2answers
1k views

Using a tabula recta to store passwords

Reading an answer to another question ("Is there a method of generating site-specific passwords which can be executed in my own head?") I came across this link, describing a way to use a physical ...
4
votes
1answer
560 views

HP ProtectSmart In A Domain?

All of our HP PCs come with this software pre-installed, I'm a bit inclined to outright remove it because: Credential manager stores passwords by default (this has lead to user confusion, plus ...
17
votes
11answers
10k views

Best practice for password distribution

I am about to set up a new account on my Linux server for a user that lives in another state in the U.S. I can't think of a good way to get them this user their password. There must be a standard ...
7
votes
4answers
11k views

How to implement a “Remember me” on a mobile app?

I would like to implement a "Remember Me" time-limited auto-login type feature on a mobile application (on Android). To start the app, the user must type in a username and password. For convenience, ...
11
votes
3answers
10k views

What are some good ways to verify user identity for password resets?

I'm wondering how others verify the identity of users they're resetting passwords for. We currently try to speak to a manager at work, but it frustrates end users and seems like we don't trust them. I'...
1
vote
1answer
914 views

If password is changed on Active Directory, can I ensure that PC must be restarted before logon with new password

Basically, if I have a Windows computer connected to a domain, how can I ensure that if the password is changed on Active Directory that the computer must be restarted before the new password takes ...
1
vote
1answer
338 views

Should I mount my mac Truecrypt Volume elsewhere?

I've read in various places to not mount your truecrypt volume in the same place as your Dropbox or Sugarsync folder. I believe this only matter for Mac/Linux, but I need some verification. On a Mac, ...
10
votes
3answers
12k views

Security of passwords remembered by Windows

Does Windows XP or Windows 7 encrypt saved passwords? I'm assuming that the user uses local password to logon. The user then uses his own computer to connect to server in work and sets the "remember ...
2
votes
1answer
626 views

Best security algorith for storing passwords [duplicate]

Possible Duplicate: Which password hashing method should I use? I want the best cryptography algorithm for storing passwords in database, which one should I use and how can I implement using java ...
6
votes
1answer
637 views

Android for the Paranoid

In the case of a rooted phone, what are the various options to stay anonymous and keep your data secure? I've seen the guys at The Guardian Project work towards this: https://guardianproject.info/apps/...
15
votes
3answers
628 views

Is it possible to not store passwords locally, at all?

Earlier this year I was playing around on the schools computers and found out the administrative password to a computer in my classroom. I realized how XP stored their passwords, booted into Ubuntu, ...
27
votes
2answers
33k views

Sudo password when authenticating via passwordless SSH

I've got a few boxes all networked together on Amazon EC2, each of which are in automated communication with each other via SSH (rsync, etc). As such, I've created SSH keys on each of these machines ...
4
votes
0answers
1k views

Hints for safe passwords that are easy to remember [duplicate]

Possible Duplicate: What is your way to create good passwords that can actually be remembered? What are good hints to create passwords that are both safe and comfortable? By comfortable I mean e....
6
votes
2answers
294 views

How should hospitals handle the use of sharing credentials to access sensitive information, especially in critical situations?

Most organizations today hold individuals accountable for their actions on systems and networks by unique user IDs and passwords. However, imagine working in a hospital environment where access to ...
27
votes
4answers
2k views

How should I respond to poor password security?

My son's school uses a 3rd party to handle tuition and fee payments. I have recently come to the realization that they completely fail in the area of password security. Last month they sent a ...
3
votes
1answer
721 views

Saving connection parameters in an RDP file

For connecting to a remote Windows Server 2008 I use a standard Windows 7 RDP remote desktop connection. In an RDP dialog there is an option to save connection parameters to an RDP file to use it ...
4
votes
3answers
978 views

Best password storage scheme for high entropy, unique passwords which is failure resistant [closed]

What is the best, most secure, easiest way to: store unique, strong passwords for every service which requires authentication make the system resistant (total loss of security is avoided, breaches ...
19
votes
4answers
2k views

If a website allows another person to get a list of the site's users passwords, how likely is it that the passwords are stored in cleartext?

We had an incident where some of our managers were given passwords for the people they supervise using a particular company website. Ostensibly it was done so the managers could check in on the users ...
5
votes
2answers
2k views

Password History/Password policy

I'm referring to "remembered" password that the domain keeps so a user cannot reuse that password until it has expired in what was set at Password Policy on DC (W2003/W2008). Where is password ...
2
votes
0answers
1k views

Adding an alternative password change scheme to passwd using PAM modules [closed]

I am trying to set up a PAM module that lets one add a conditional password change scheme. The intended behavior is like this: passwd do you want to change authentication token for TestProgram?(s/n): ...
14
votes
2answers
245 views

Would suggesting a random passphrase during sign-up hurt overall security?

I've been looking for ways to improve security and security awareness for both internal and external clients and I happened upon the idea of generating a one-time, random "password suggestion" on the ...
4
votes
1answer
1k views

How can I manage multiple sets of passwords accessible by different users? [duplicate]

Possible Duplicate: Sharing passwords and credentials between founders and employees I use KeePass for my personal passwords. I would want to use it for my business, too, but the only way I ...
2
votes
2answers
369 views

Company sending Master passwords in unencrypted emails

If a company has terrible security policies like letting people email password in cleartext emails, what to do if they reject all fair minded advice?
13
votes
4answers
513 views

Can apps be trusted when requesting your credentials?

I recently bought a newsreader app for my tablet that connects to Google Reader. To do so, it required my Google account password. Isn't this effectively the same as handling the password to the ...
8
votes
3answers
801 views

How is “anonymous” getting ahold of all these plain-text passwords

In the last several months there have been several publicized data breaches and public website defacements done by several different hacking groups (which the media loves to group under a single ...