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

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2
votes
3answers
213 views

Prevention of user's passwords being stored as plain text in bash history

Say I want to find the password of a linux user sudoer account. Assume he uses a strong password. Assume I have physical access to the machine. I can get hold of his passwd and shadow file and brute-...
4
votes
1answer
108 views

Storing base passwords in Lastpass

After watching Mr Robot I finally motivated myself to setup two factor authenitication for Lastpass with Yubikey. Fastmail is the second service I've set up with my Yubikey. I changed my main ...
3
votes
1answer
129 views

How to safely reuse passwords in variation?

Remembering a lot of passwords is difficult. A lot of people use the same or a small set of passwords for everything. Of course, this is very unsafe. If such a password a password is stolen, the ...
0
votes
2answers
248 views

Chrome/ Opera continue to save & autofill passwords after installing LastPass? Good or bad? Enable/ Disable?

I moved to lastpass a few months back and imported passwords from all Browsers. Apparently, Chrome & Opera {based on Chromium} still pop-up the option to save passwords and are probably ...
7
votes
2answers
290 views

Is KeePass's method for key derivation secure?

I'm familiar with how key derivation functions can be used to slow down brute force attacks against passwords by requiring significant computational and/or memory resources to compute the final key. ...
6
votes
1answer
77 views

Should I inform a random person on the internet that their data may be compromised?

I've found a data leak in a fairly well known password manager. I'm currently in talks with the developers to get this corrected. However, in proving that this is a bug I stumbled on a users data ...
2
votes
1answer
82 views

Keeping a password safe in program config

I have a Windows service which connects to a database to poll some value in order to monitor certain activity. Of course, to use this I need a database password. I need to keep this password safe, ...
1
vote
1answer
112 views

HMAC password reset link and replay attacks

I like the look of this technique for sending password reset links: https://neosmart.net/blog/2015/using-hmac-signatures-to-avoid-database-writes/ (TLDR: don't store token in database. Send password ...
4
votes
2answers
199 views

Does adding a random character to a pseudo-randomly generated password improve entropy significantly?

I'm asking a practical question. I was taught computers are bad at generating random data. Does this mean password generators, such as the one built into Keepass, suck? If yes, then would it help for ...
32
votes
3answers
6k views

Is using the username encrypted with the password as key a good password storage scheme?

On web applications I build I don't hash the passwords. Instead I symmetrically encrypt the username using the user's password and store the result in the password field. I use RijndaelManaged on ...
1
vote
1answer
140 views

What's the secure way to write clear text password into a file?

I'm trying to insert sensible data into a file. I'm trying to write a MySQL configuration file dynamically. The file contains this: [client] password: 87sfZEKEF,5 The script that I used is owned by ...
3
votes
1answer
2k views

Correct way to generate password salts in PHP 5.3 on Linux given my constraints?

In examining our database storage of hashed passwords with salts, I note a high rate of salt collisions, i.e., there are far too many cases where two table rows have the same salt stored. One ...
84
votes
8answers
17k views

If a provider sees the last 4 characters of my password, can they see it in full?

I have some domains/websites as well as emails with Bluehost. Every time I need support, they need the last 4 characters of my main password for the account. They cannot tell me how they store the ...
-2
votes
1answer
198 views

Online Password Storage: Is this safe and how can I implement this?

Hello there for an online Tool which offers the feature of storing passwords online I want to implement the following process: A user is generating a secure secret random key with Javascript This ...
1
vote
2answers
1k views

Do cloud-based password managers invalidate even the most secure architecture?

Can an online password vault, like Lastpass, be defended through a security assessment that demonstrates the value they provide outweigh the risks of being a high value target? A valid answer would: ...
20
votes
8answers
9k views

On two-step login forms, why is it the login name and not the password that's asked first?

There are several login forms (e.g. Google's) on the internet where you first enter your login name and then, once that's submitted, you get to enter your password. One of the advantages of this is, ...
0
votes
2answers
124 views

Store password in Public Domain using files and md5sum

Whenever I check integrity of a file using md5sum, I get a string of alphanumeric characters to compare and verify if it was downloaded correctly. Couldn't the concatenation of several of those ...
8
votes
3answers
473 views

Forgot password and revealing whether account exists

So when you hit that forgot password link and enter your email address, it seems that sites (and other programmers I've spoken to) are one of either two mindsets; Notify the user whether or not the ...
0
votes
1answer
45 views

Is there any problem using empty salts with PBDKF for this purpose?

The aim is to generate a secure key for symmetric encryption. I have a master password, from which I want to generate the key for symmetric encryption, in order to encrypt other passwords. The idea ...
-2
votes
2answers
76 views

When should a password be hashed? [duplicate]

I develop a Smartphone App and have a little question: When should I hash the user passwords, on the device or upload them in plain text and hash them on the server before stored in the database?
7
votes
2answers
166 views

Do password managers leak information with swap memory?

The post How to find passwords in memory (password managers) concluded, that passwords are visible in plaintext if you login to a website. Password managers tend to store the passwords encrypted in ...
1
vote
2answers
171 views

Several hashing routines support client side work. Doesn't the hash just become a password equivalent?

Isnt Secure Remote Password Protocol (SRP) pretty much client side hashing? Argon2 the winner of the PHC also allows for client side hashing. How do these systems avoid the plaintext equivalence ...
0
votes
1answer
200 views

How secure are the passwords stored at Google Passwords? [closed]

It seems Google activated central place for storing app/website passwords which is accessible at https://passwords.google.com/ and all the remembered Chrome passwords are synched there. In what ...
4
votes
1answer
120 views

Keepass - Needle in a stack of needles

I got the idea from someone saying the best way is to hide the needle in a stack of needles, not in a haystack. I am considering writing a little app to accompany my Keepass installation. The app ...
6
votes
2answers
628 views

How to store passwords in database so that they can be retrieved?

I'm developing a password manager web app. It's just for fun: I'm not exposing anybody's passwords. My idea was to use hashing+salting, and that's what I did for the master password. But then I ...
2
votes
3answers
2k views

Centralized local hosted web based password manager

In our company we have more than 100 employers and everyone use several online applications daily. To access all of this sites they need a password which was now stored very insecurely. so I'm ...
2
votes
3answers
197 views

How does a hash which contains algorithm to choose can be secure?

I was thinking about creating my own hash+salt function, something like sha1(password + md5(login)), then I read here (part 4) that creating it's own hash+salt function is a bad idea, because if the ...
0
votes
0answers
11 views

Secure Distribution of Admin-Defined Credentials to End-Users [duplicate]

Situation: I need to safely send database credentials created by the admin to users in a secure fashion. Currently, creds have been sent to users via plain text email (which is a huge security ...
3
votes
1answer
157 views

Security implications of syncing with off-site keepass database

Is it a safe practice to sync with a Keepass database that is stored on an off-site server? Database is accessed primarily through my Android running 4.4.2. I access/sync my Keepass database by ...
5
votes
1answer
236 views

Are there any passwords managers that use a second hidden encryption drive to hide passwords?

I've heard that encryption program, Truecrypt can create a hidden encrypted drive within an encrypted drive; and even if an attacker accesses the first encrypted drive he/she cannot prove the hidden ...
17
votes
5answers
3k views

Is this idea for a password manager secure? If so, why doesn't anybody use it? [closed]

I've been thinking of a problem with usual password managers: although they do provide better security than manually using passwords, there's a central database that can get lost, get compromised, etc....
3
votes
5answers
263 views

Any security risks for the login authentication and change password on the same page?

I want to ask if there are any security risks for the login authentication and change password on the same page? Normally the user needs to authenticate first in order to see the password change form....
6
votes
3answers
203 views

Is google saving clear text passwords? [closed]

On your GMail account you have the option to add other POP3 accounts to automatically fetch mail from them; Google Mail Fetcher. When enabled you have to specify your username and password, and the ...
5
votes
1answer
780 views

Is Django's approach to password reset tokens secure?

I am implementing a password reset feature for a web application and am contemplating adopting an implementation similar to Django. In a nutshell, Django creates a token who is comprised of a ...
1
vote
2answers
174 views

Is there a way to securely store unsalted passwords?

So, obviously I'm not talking about username/password pairs here, I plan to store passwords with two salts and three hashes, but what occurred to me is that if I had a table where I kept pairs: ...
6
votes
1answer
222 views

Should I change the password of my password manager regularly?

A password manager can store lots of sensitive information like passwords, pins and so on. To access this data, we should use a strong password/passphrase in order to protect our data. This password ...
0
votes
1answer
164 views

Saving username and pasword inside SQL

I am currently managing a network of around 100 PCs. Many users have different mails/usernames and passwords for different services like login to PC, mail, local applications, ... When an application ...
4
votes
3answers
952 views

How YubiKey Challenge-Response works “locally”?

I have got a YubiKey NEO recently (and a bit disappointed that you can only have two activated second factor authentication methods out of all the listed). In password managers those support YubiKey, ...
38
votes
8answers
7k views

Is “different usernames” as good as “different passwords”

The answers to this question, and the associated xkcd got me wondering: if I use different account names in every service, then can I use the same hard-to-crack password in each? I'm thinking that ...
1
vote
1answer
95 views

Store/retrieve users passwords on server (using password managers ?) [closed]

I am working on a project in wich a school's server will need to use students' passwords periodically to connect to another website for them. I am aware that storing users' passwords in a server ...
1
vote
2answers
182 views

Hashed master password and generated encryption key in a password manager program

I'm writing a WPF password manager application to practice programming, so far this is the scheme I intend to use to store master password and individual site password: Master password: Generate a ...
1
vote
1answer
211 views

Password management: how an administrator should reset password for a user?

I implement simple user management. How an administrator should reset password for a user? Just provide a new password for a user (as in Active Directory)? Is it secure enough? Added Is it secure ...
5
votes
3answers
324 views

Why do banks still hack-up autocomplete=off functionality?

With Bug #1025703 in the latest Firefox 38, Mozilla has finally decided to stand up for its users instead of catering to the banks that don't want the passwords remembered. However, I've noticed ...
2
votes
2answers
147 views

Best practice for identity management methods with regards to confirming user existence

I'm working on a new site that uses asp.net identity to register users. I'm making use of email addresses as usernames and the email address has to be confirmed before the user can log in. I've been ...
5
votes
6answers
258 views

Is hashing a string a secure manner for generating passwords?

I have several servers that I'm using for an online business. I have passwords for MySQL, Wordpress, SSH, FTP, Domain Provider, Paypal, and many more. I wanted to have a different, very long password ...
11
votes
4answers
2k views

Why will Google no longer allow me to end or begin passwords with a space? [closed]

Why won't Google allow me to use a password ending in a space anymore? Backstory: I have memorized a cipher that allows me to generate a different and very strong password across many different ...
0
votes
1answer
87 views

Is secure tokens send by email secure? [duplicate]

I'm struggling with the reset password function of a web app, the way i'm inclined to do it is by sending a token based url to the email of the user and than the user can access and reset its password,...
2
votes
1answer
107 views

Is drag-and-drop safer than using the clipboard when it comes to protecting sensitive data from keyloggers?

I noticed that multiple password-locker applications recommend that you use the drag-and-drop feature to transfer passwords to login forms instead of copying the passwords to the clipboard or having ...
4
votes
3answers
865 views

Which passwords to exclude from a password manager?

The benefits of a password manager are clear. Still, it seems that there might be a case to keep at least some passwords out of it: Your primary e-mail, to minimize the "single point of attack" ...
5
votes
1answer
354 views

Where to store hashes, salts, keys in Desktop Applications

I am trying to figure out where or how i should store application secrets and keys inside a desktop application. For example a facebook app key or dropbox key and secret. So I've read that i should ...