A set of requirements regarding password creation, storage, and usage. These requirements often constrain several characteristics of passwords. So, a password policy is a set of rules designed to enhance computer security by encouraging users to employ strong passwords and use them properly.

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Importance of password strength with secure element?

Greetings SE security community. Background: I have a number of items like certificates, databases, and encrypted file systems that require private keys. In order to avoid having duplicates of these ...
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How to easily remember lots of different passwords?

I know that you shouldn’t use the same password on every site. But, when you log into several dozen sites, keeping track of all the passwords can be pretty hard. What system do you recommend that ...
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10answers
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Why do password strength requirements exist?

Password strength is now everything, and they force you to come up with passwords with digits, special characters, upper-case letters and whatnot. Apart from being a usability nightmare (even I as a ...
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3answers
121 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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1answer
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How could someone change a root password without modifying `chage -l root` date?

How could someone change the root password without changing chage -l root Last password change date? I know it was changed because it does not match the value in Keepass. I noticed when I tried to use ...
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2answers
73 views

Password reset system code system vs long hash

I'm building a password reset system at the moment and I've come across a dilema. Currently we have a system which creates a long md5 has (16 characters) and emails a link to a customer which they ...
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7answers
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Aren't password managers still incredibly risky?

I understand the utility in having one application remember a bunch of long, randomized passwords, but all you'd need is one well-placed phishing scam or a keylogger and they get all the keys to the ...
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8answers
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Why not allow spaces in a password?

"Your password can't contain spaces." is a message I see from some websites, including 1 . Why? (This question is very similar to Why Not Allow Special Characters In a Password? , but the answers ...
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Trusted Platform Module (TPM) secure password

I'm trying to set secure Trusted Platform Module (TPM) passwords on a network and would like to set it to the maximum length possible. How long can the TPM's password be? Is it limited by bits or by ...
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Is it a security concern that a shop I registered at obviously does not encrypt my password?

I was kind of shocked when I just received my confirmation mail from the shop where I just registered myself: they sent my username (which is my email address) and the password I typed in. The ...
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8answers
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Why Disallow Special Characters In a Password?

The culprit in this case is a particular (and particularly large) bank that does not allow special characters (of any sort) in their passwords: Just [a-Z 1-9]. Is their any valid reason for doing ...
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2answers
57 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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12answers
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What technical reasons are there to have low maximum password lengths?

I have always wondered why so many websites have very firm restrictions on password length (exactly 8 characters, up to 8 characters, etc). These tend to be banks or other sites I actually care about ...
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0answers
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Is there a FIPS 181 like standard for random password generation with alphanumerical seed?

NIST recommends FIPS 181 as a random password generator for "easy to remember" passwords. As far as I understand the standard: it will generate a password that is lowercase, and with some ...
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2answers
121 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 ...
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2answers
72 views

Enforcing password change

When a site gets hacked, or otherwise, the web site forces you to change your password. This is done by simply telling you to change your password, not enforcing it. Why do they do that? For ...
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7answers
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Why would you not permit Q or Z in passwords?

Jetblue's password requirements specify that, among other stringent requirements: Cannot contain a Q or Z I can't fathom a logical reason for this, unless it were say, extremely common for the ...
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1answer
800 views

Why do websites limit password length? [duplicate]

I just made a new account with some eGov service (Belgian government). I use LastPass (which generates long, random strings for each site), But the system told me that the maximum allowed length was ...
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3answers
104 views

Is it possible to have a high confidence that a password is not being reused?

Have a few thoughts on the topic, but the general gist is if a user inputs a new password, is it possible to have a high confidence that a password is not being reused elsewhere? By elsewhere, I mean ...
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4answers
361 views

Best practice for forgot password form, ok to leak that a given e-mail is invalid

On our forgot password reset form, is it ok to leak that a given e-mail address entered is invalid? Or should we always just return success and check your e-mail, even if the e-mail is not valid. I ...
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3answers
1k views

Logging “password with counter” use

When prompted to update their passwords after they've become stale (whether that's after 30, 60, 90 days — whatever is implemented by policy), many users simply increment the number that they may have ...
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1answer
109 views

how to use hash passwords to retrieve keys from keystore or access database

How do I hash the password for a keystore? How do I then use the hash to retrieve something from keystore? Similarly, how do I use a hashed password for accessing the database? I have encrypted the ...
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2answers
62 views

cleartext passphrase for keystore

How is passphrase for a keystore to be stored? we have all passwords encrypted and the key to encrypt is stored in keystore , so how is the passphrase for the keystore to be stored? in clear text? if ...
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1answer
82 views

What are the implications of an overly-restrictive password policy? [duplicate]

I came across an interesting password policy online recently: "Please be sure to enter a password that meets the following criteria: must be 8 characters long must not be based on dictionary words ...
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5answers
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Is saving passwords in Chrome as safe as using LastPass if you leave it signed in?

Justin Schuh defended Google's reasoning in the wake of this post detailing the "discovery" (sic) that passwords saved in the Chrome password manager can be viewed in plaintext. Let me just directly ...
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1answer
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Is there an anti virus that protects processes from being injected code to?

As title says, is there an av that does that? And if not, is there any other program that protects processes like lsass in windows, apart from protected process utility in win8.1?
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1answer
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Is there an equation to calculate the number of instances of a series of characters exist in a given key space?

If I'm using 16-18 character-length passwords with 94 different possible values-per-character (lower alphas, upper alphas, numbers, and special characters), is there an equation I can use to calculate ...
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8answers
2k views

Who is responsible for the strength of user's passwords?

Who is responsible for a user's password's strength? Is it us (developers, architects, etc.) or the user? As a web developer, I've frequently wondered whether I should enforce the minimal password ...
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3answers
660 views

How often should I reset my salt?

I'm thinking of implementing a salt recycling scheme on my user credentials database. The motivation behind this decision is that even if the attacker manages to get his hands on the database and has ...
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3answers
551 views

How can I promote good password practices in an organization that doesn't currently care about that?

I work with an organization that uses some very poor practices such as using default user accounts, default passwords (or passwords the same as user accounts), sharing password information between ...
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5answers
2k views

Pronounceable Password Generator

I am currently looking for a password generator which produces pronounceable passwords. I have used this random password generator a few years ago to generate a 42 characters long password and found ...
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3answers
248 views

What are the possible rules to identify password sharing- to prevent fraud

I am trying to build correlation/ potential red flag rules to detect if passwords are being shared or stolen... the primary driver for this is guidance from our compliance team, that much of our ...
4
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3answers
158 views

Why is password strength often underestimated and uncertain in the context of password hashing?

An aspect of security has bugged me for a long time: Why is there positive certainty about the importance of hashing algorithms and salts, but password strength is either never mentioned at all or ...
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2answers
132 views

What's wrong with a website including a password in a confirmation email? [duplicate]

I recently registered for a website and received an email that said "Thanks for registering, here's the username and password you used to sign up". The webmaster assures me that plaintext passwords ...
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3answers
512 views

Does it make any sense to alter a hashed password? [duplicate]

I've always wondered if it would make any sense to put fake characters into a hashed password? For example this is my password: 1234 and after hashing the password , this is the result: abcd Then ...
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2answers
83 views

Password history with PBKDF2

Scenario: Cannot use previous 15 passwords Using PBKDF2 with iterations targeting 1 second execution time In this scenario, when a user wishes to create a new password, the server must combine ...
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1answer
181 views

Why don't we do dual password instead of forgot password?

You can see a link Forgot Password? nearby almost all login form. As I mentioned in question, Since passwords are completely protected from outside access unless owner reveal, I come up with this ...
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1answer
110 views

Is it a good idea to give users an additional password that they do not control?

It's a given that users will choose bad passwords. Why not help them out? Using a securely-random choice from a large dictionary, choose one or two words and tell the user to write them down. When ...
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9answers
8k views

How long should the password be?

The minimum password length recommended is about 8 characters, so is there any standard/recommended maximum length of the password?
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3answers
104 views

Using a Hash as a Salt? [duplicate]

Ive done a bit of reading on the subject of Hashes and Salts and I came up with an idea for a salting scheme but I wanted to check it with some people more learned than myself. My basic idea is to ...
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3answers
633 views

Do you think it's a good policy to disclose your password encryption method to users? [closed]

Do you think it’s a good idea to disclose your password encryption policies in your privacy policy or terms of service agreement? In other words, would you tell your users - and the world - you don’t ...
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10answers
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Best password strength checker

In XKCD #936: Short complex password, or long dictionary passphrase? Jeff claimed that password cracking with "dictionary words separated by spaces", or "a complete sentence with punctuation", or ...
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3answers
79 views

Does my account lockout policy makes sense?

I have a web-based application where users can log on with username and password. I just implemented a new account lockout feature and was wondering whether it makes sense or I totally screwed it ...
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2answers
82 views

Is it bad to use the same sequence of characters in each password?

A friend of mine purposed a method of making passwords where each has the same base and added to it is something indirectly related to the site or product being signed into. For example all passwords ...
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2answers
51 views

Problems with undefined password requirements [duplicate]

An annoyance of mine is when websites try to force me to use characters or a password policy that makes it difficult for me to remember (e.g. a number, lower-case, upper-case, special char, 5 - 10 ...
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0answers
25 views

Are longer passwords more secure? [duplicate]

There are more and more sites claiming that long passwords which are chained words are not only easier to remember, but also more secure then short but obscure ones. Don't get me wrong: I totally get ...
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6answers
222 views

Does including the username in a password make it less secure?

Many registration forms prevent you from choosing a password that includes your username. Is it a reasonable restriction from security standpoint? I can see that if your username is "foobar" and ...
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2answers
159 views

On what layer should password hashing and/or encryption take place

I'm finding myself on the inexperienced end of a discussion about where password hashing takes place. My coworker drew a schema from less to more secure, where the Public Internet was the least ...
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4answers
5k views

Regulations that specify password length?

I have read: PCI DSS 1.2 SOX 404 AR 25-2 ISO 27001 But only PCI DSS specifies a minimum password length. Are there any other regulations that dictate password lengths for any industry? NIST ...
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8answers
416 views

Generate user a password instead of asking for one?

I'm trying to weigh the benefits of not allowing users to create their own passwords, but must pick out of a generated selection. Are there any examples of sites that use this approach? Workflow ...