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

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How secure is this method to remember security questions?

So I found an interesting method of remembering those pesky security questions. Basically, the guy takes a hash of the question (IE what is your mother's maiden name?) and then appends his own ...
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4answers
4k views

How does a key file increase the security of a password manager?

Password managers like KeePass often have an option to use a key file in addition to a master password. I don't understand how this increases security. (Note: KeePass also allows using a key file ...
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2answers
217 views

Why would Keepass2 decrease the password quality after adding another character?

In Keepass2 I was typing in a password and noticed the number of bits went down. Why would this be? I was using two words and mixed them up by replacing certain letters with numbers.
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3answers
333 views

Bash command argument security

Suppose I want to call a program that takes in a username and password to start. What are the risks with calling the program like ./prog --user 'User' --password 'Password' other than the obvious leak ...
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3answers
401 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 ...
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3answers
304 views

Are there any disadvantages to encrypting the password hash?

Is encrypting the password hash in database more secure than storing only the hash? Suppose we store encrypted SHA-256 result with AES instead of hash directly. Is this a good protection from a ...
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3answers
2k views

Is KeePass a good defense against keyloggers?

KeePass is a program in which you can store your password and copy and paste them into websites. Does anyone know if it is safe against key logging software? Does key logging software pick up what you ...
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3answers
529 views

Reset password - should I prevent abusing it?

My assumption is that resetting password is only a security issue if an attacker gained access to the user's email. But I was wondering, what if someone simply abuses it (e.g. sends a "reset ...
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3answers
983 views

Does LastPass' multi-device functionality significantly compromise its security?

I think LastPass is a great consumer product because it allows users to conveniently utilize unique strong passwords for each site they use it with. It does encryption locally, but the fact that I can ...
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2answers
1k views

What's the best way to send and receive lots of login credentials?

I'm currently a web developer for a company with lots of different remote clients. There are lots of usernames and passwords that I need to know so that I can do my job. When I first started, I was ...
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3answers
490 views

comparing password hashing algorithms - PoC ideas?

OK so I just started working for a security consulting firm and we recommend SHA 256 (with salt) for password hashing because MD5 is too weak. I have read some brilliant answers (the list is too ...
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3answers
3k 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. ...
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2answers
199 views

What are the weaknesses of my authentication scheme?

So, recently, after going through some infosec training (FutureLearn's Introduction to Cyber Security, which I heavily recommend as well-explained newbie material), I decided to take the plunge and ...
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3answers
4k views

Does adding two-factor authentication by OTP really make KeePass more secure

KeePass is an application that keeps all your passwords for you in a database. It is primarily protected by a master password and/or keyfile. If the database is properly encrypted with that password ...
5
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2answers
413 views

Can a HSM be used to make password hashing stronger?

Say a database server has a HSM which is in use for encrypting (reversibly of course) credit card numbers. Is there any way a HSM could be used to add strength to a password hashing scheme? (Or are ...
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2answers
107 views

Share root access without sharing password

I am looking for a way to share admin privileges on some hosts without providing the admin password. From his link, I was thinking of using a primary host from which every user can sudo -u user to ...
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3answers
2k views

Is there a decentralized version of LastPass?

I am using LastPass for managing passwords on multiple computers. However, LastPass extension (at least the chrome version) is running some opaque binary code through Native Client, and I just feel ...
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2answers
1k 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 ...
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2answers
333 views

How can I detect users that have requested AD Administrators to reuse an expired password?

There is a trend among companies I've worked at where administrators (or helpdesk folks) give a user a courtesy extension of the old expired password... rather than forcing the user to change it. ...
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1answer
72 views

How do people keep track of their employee's privileged accounts?

I am curious how the community here keeps track of a user's accounts. For instance, in the event of an employee transitioning from the company, how does security make sure that all user accounts the ...
5
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1answer
111 views

Is it acceptable to generate salts with a hash of the username?

Salts are supposed to be unique and randomly generated for each user when storing passwords. Is there a reason why we can't generate these salts with a cryptographic hash function using the username ...
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11answers
4k views

Definitely safest password storage scheme?

I already asked this on StackOverflow but I was suggested this would be a better suited place and I found no way to "move" the question so I have to copy it. Believe, I know, there are hundreds ...
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6answers
2k views

How can I best manage root passwords for many servers?

Lets say I have two racks with about 40 nix servers in them. I don't want to set all of the root user passwords all the same do I? If not how do you manage and keep up with all of the passwords? Is ...
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4answers
261 views

Using a password manager vs manual

was wondering, who still uses the traditional method of storing passwords (in envelope) in an actual physical safebox vs modern methods like password managers? what are the pros and cons of each ...
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4answers
1k views

Temporary passwords e-mailed out as plain text

Is this a security issue? Many big ecommerce platform companies use this feature. Where if you forgot your password, they e-mail you a temp password. Could someone potentially figure out the ...
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6answers
2k 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 ...
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3answers
754 views

Question about a simple strong password management system

I am designing a system which requires access control via a strong password and for that purpose will use a password generation algorithm A that produces a strong password of length L >= 32. The ...
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2answers
514 views

Is there a risk in sending the username in a password reset email?

We're using a CMS that has a password reset function that works according to best practices out of the box. Passwords are stored as salted hashes Forgot Password works like this: User enters ...
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3answers
970 views

How to evaluate a password manager?

How can we quantify the trade-off between password aggregation and convenience? Password managers such as lastpass are convenient, but aggregation of passwords into a common store may reduce ...
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4answers
2k views

Throttling failed login attempts: exponential timeout? by IP? using a session cookie? captcha?

I'm beginning to think this is not as simple as it looks, and many "accepted" answers here and in SO have alternative answers that criticize them. Here is what I have gathered so far Most of what I ...
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2answers
2k views

Keepass client on Android (reliable one)

I need some advice to choose a Keepass client on Android phone which can synchronize using Dropbox. As i keep all my passwords in one place, I would like to keep it safe. Is KeepassDroid client safe ...
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3answers
325 views

Hashing vs “One-way Encryption”

When working on a website application, me and a friend asked a security expert (works at IBM) how to handle storing passwords. After hours of google searches (resulting in hours of ...
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2answers
101 views

Should password recommendations be different for devices, networks, and internet?

I started using a password manager last year and updated nearly all of my internet accounts to super-strong, unique passwords, and that isn't a problem, cause I only access them from web browsers or ...
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4answers
251 views

What is a good algorithm for memorizing a password in a few minutes?

Let's say I am following good security policy and picking passwords that are: Long Complex (passphrases where possible, otherwise random strings with special characters) Unique (completely ...
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5answers
456 views

How to memorise multiple xkcd-style passwords for particular services?

I could use a password manager, but I don't like relying on another entity than myself to store my passwords, and it would screw me over if I find myself on the internet in a new location without the ...
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1answer
308 views

Saved passwords (use case)

I have a program in which a user enters a password, and the user data is stored encrypted using AES-128. The data and passwords must be stored together. Both the data and the password are encrypted ...
4
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5answers
118 views

What would be a good way to send sensitive information to users that are not very tech-savvy?

As web developers we need to supply sensitive data to the clients. Clients are usually not very good with computers. They can send an email, pick up a phone call or open a webpage. But won't be able ...
4
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1answer
349 views

RSA vs PBKDF2 for password storage (theoretical)

I know this is not the right way to store passwords, but I'm asking this from a theoretical perspective: Suppose a web site's passwords were encrypted with RSA asymmetric encryption and the private ...
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2answers
598 views

How to securely audit passwords using John the Ripper

When my clients create a password, they are shown a strength meter and I have set the requirements fairly high. However, the strength meter is essentially only useful if being attacked by a very dumb ...
4
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1answer
330 views

Password Managers: encrypted database vs hashing strategy

I'm considering moving to a password-management strategy based on supergenpass or something similar. This is an alternative to other password managers where instead of having a database of passwords ...
4
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3answers
253 views

Alternative to security questions for account recovery when email isn't an option

I'm working on a project whereby a certain level of anonymity is required for users. One of stipulations is that no email is used at all, as it makes the barrier to entry too high for people who want ...
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2answers
3k views

Password management in Firefox, Chrome and Safari

I just read a couple of very interesting discussions on Chrome password security strategy. Chrome’s insane password security strategy Showing stored passwords - Tim Berners-Lee The following is how ...
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2answers
203 views

iPhone - logging out user when app goes into background

Our (financial/banking) mobile app requires user to enter username/password in order to get data via webservice calls. Once user is logged in, credentials are stored in global variable until user logs ...
4
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1answer
88 views

How to help users manage password portfolios based on risks of compromise?

A framework for modeling password management risks and costs, and the beginnings of a good strategy for users to help them manage passwords for their often large portfolios of accounts is outlined in ...
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3answers
230 views

What implementations are possible for dual control?

An organization requires employees to use 2 person authentication in some scenarios. That is, when accessing, say, a server, secret knowledge from 2 people should be used for authentication. No one ...
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2answers
441 views

Protecting Password Hashes with Store Procedures?

I was thinking about the recent (seemingly weekly) security breaches we've seen where millions of password hashes have been leaked and I was wondering how one might secure their site against a ...
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2answers
414 views

Where to draw the line with password managers? [duplicate]

I have just started using a password manager and was wondering what is the best practice regarding where to draw the line regarding what is stored in the software. Ideally I could store Windows/Unix ...
4
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1answer
140 views

Does SSH authorized_keys violate the principle of “re-authenticate before password change”?

It is generally accepted that password change mechanisms should ask the user for their old password (e.g. OWASP) The reason being that an attacker who has temporary access to a user's session (be it ...
4
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1answer
219 views

API to change passwords?

After I learned last week that the login data of some of my accounts was leaked, I had to change my passwords for more than 30 sites. That was tedious! As luck would have it, some days later we ...
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2answers
165 views

Guidance for “image based” password reset challenge

Thycotic has a Password Reset Server that allows the user to select from several images. What general guidance is there for an image-based password reset challenge question? Examples may include ...