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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What security policies and practices could one practice to safegaurd against being inebriated?

My passwords for the most part as well as access procedures I could do while inebriated/intoxicated. Be it a simple login/password login to email or VPN and accessing a database. This might sound ...
0
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0answers
36 views

Does an account with a !! /etc/shadow entry have to still expire?

Currently where I work, our password policy is set at 84 days. This is set in our login.defs on all of our Linux machines. We have policies that are set around PCI DSS 3.1 and the like, this goes for ...
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1answer
465 views

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

You can see the link "Forgot Password?" nearby almost all login form. Since passwords are completely protected from outside access, I come up with this question. I accept that the forgot password ...
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2answers
2k views

How hard is it to hack into a webmail account with a strong 8 character password?

Assume the hacker starts with only your email address and he has high incentive to gain access. UPDATE: Also assume the password is unique (never used elsewhere) and it is NOT a guessable word like ...
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3answers
579 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 ...
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7answers
4k views

Does username length/complexity/uniqueness positively impact security?

Is having a longer/more complex username considered more secure than using a shorter/basic one? Would the uniqueness of a username positively impact security? This is assuming that adversaries ...
2
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2answers
86 views

Are there any examples of huge damages done by password leaks, or bad password management policies? [closed]

Everybody knows that a strong password is very important. However, I can't find any citable public example of any kind where a user or users suffered a heavy loss from using bad passwords, or their ...
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5answers
12k 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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3answers
97 views

Why shouldn't I use an old password? [duplicate]

Some services like Google or Facebook forbid me to use a password that has already been use for the same account in the past. My question is, if this old password was never compromised (i.e it was ...
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5answers
989 views

Would turning a Diceware phrase into a sentence decrease its security?

Diceware passphrase lengths are on the rise - up to six or seven words now. The old adage that passphrases are easier to remember may be true for shorter phrases, but six truly random words can be ...
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0answers
30 views

password aging, advantages and disadvantages [duplicate]

What is the advantages and disadvantages of password aging? Should we apply password aging policies? Thanks a lot.
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3answers
123 views

Reason to ban digits as first character in passwords?

When I sigend up for a service by DHL (German parcel delivery service), they had the strangest password guideline I have seen so far: At least 8 characters but no more than 13. Only usage of “valid” ...
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2answers
102 views

How can I enforce strong password policy with non-technical user base?

I've been using zxcvbn to enforce strong passwords for a service where break-ins would cause considerable problems. However, the service is only viable if many users sign up. We've found that users ...
9
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2answers
215 views

How to create dictionary to prevent weak passwords?

I've been tasked with adding a "dictionary check" against user's passwords to prevent weak passwords. Unfortunately, that is about as much guidance as I've been given and I need some help deciphering ...
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3answers
143 views

Prevent password reusing across different sites

I'm generally against too strict or complex rules to accept passwords (rules like "It must contain at least one upper-case character, one number and one symbol" and things like that, see also XKCD ...
4
votes
1answer
68 views

Is limiting/cutting password-length without notice insecure?

I have encountered that our linux system cuts the length of every password to a certain length, after that length every additional character seems to be ignored. Does this make our linux system more ...
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7answers
5k views

How to prevent username and password matches when changing a username?

Let's say that I have a system where one of the security requirements is preventing users from choosing a password that matches their username. Usernames are not case sensitive but the passwords are. ...
3
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1answer
85 views

Unable to completely enforce password policy

PCI DSS has a few requirements regarding the password policy (like remember last four passwords, change password every 90 days, use at least seven numeric and alphabetic characters and more). These ...
3
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1answer
83 views

Is locally reusing a password a bad practice?

All my valuable data is in VeraCrypt volumes. The (very strong) keys of the volumes are stored in a single KeePass database, which uses a reasonably strong password. I want to encrypt my backups too, ...
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3answers
2k views

How often should passwords change?

I'm asking two very related questions As an admin what policies should be enforced regarding the frequency of password changing? I have an idea that users should be forced to change their ...
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5answers
3k views

Is forcing users to change passwords useful?

In many places, there's a policy that force the user changing it's password once a few months. The logic here is, that even if the password have leaked somehow, it'll be abused only for a relatively ...
4
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1answer
1k views

Why does ebay prohibit certain characters in password strings?

I had to change my ebay.com password today and, to my surprise, I was not allowed to use certain characters. For example [ results in an 'invalid' password and the system refuses to accept it. Is ...
8
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3answers
967 views

How can I store a password history to prevent reuse?

I have an application with a user database. The database stores the password using a bcrypt hash with a randomized salt. How can I implement a password history set (to prevent password reuse) in a ...
38
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7answers
31k views

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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5answers
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Passwords - any statistics on user behavior?

I'm looking for analyses of how users choose and use passwords. I'm sure there are many resources out there that analyze user passwords. For instance, I've seen many people analyze dumps of password ...
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4answers
316 views

If A Password Is Unique, Does It Really Matter How “Strong” It Is?

People seemed to find this "If a Password is Super-Strong Does it Matter if It's Unique" question very interesting, but it actually reminded me that the converse question is interesting, too: If you ...
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3answers
316 views

Why is encryption bad for passwords?

We use PGP for almost everything and it's so infeasible to bruteforce that it's considered secure. This is the guiding principle beyond CryptoLocker. But for stuff like e-mail, SSH and HTTPS, it's ...
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3answers
160 views

How can I write a good corporate password policy?

Our company works in health care, and we've written a corporate security policy, including passwords. Something that I noticed about the policy and have commented on, it says the password should not ...
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2answers
100 views

Is it a good idea to combine words from different languages to increase a password's strength? [duplicate]

I was thinking of a way to generate a password that is easy to remember, but hard to crack, like the famous "correct horse battery staple" suggested by XKCD, also discussed here, and I've realized ...
136
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16answers
18k views

Is the BBC’s advice on choosing a password sensible?

In this article on the BBC’s website they offer advice on how to develop a password. The steps are as follows. Step 1: Choose an artist (a recording artist I presume) Lets choose as an example ...
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10answers
7k views

Intel How Strong is Your Password page, good advice?

I came across this Intel How Strong is Your Password? page which estimates how strong your password is. It has some advice on choosing better passwords including that you should use multiple ...
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3answers
3k 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 ...
2
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0answers
122 views

Has password strength been an *actual* problem in a professional context? [closed]

Among the more security savvy community (very much including security.stackexchange) there is an ongoing discussion about the strength of different password policies. Examples include the ...
4
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4answers
530 views

What to do when asked for a weak password

The guys who made the security for my country's state bank are completely nuts in all senses. Their internet banking password must be between 8 and 10 characters, and contain only letters and digits. ...
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1answer
82 views

How to manage all the unlock codes for thousands of mobile devices (iPads)?

I need to manage (assign, store, notify, etc.) the unlock code for thousands of mobile devices (iPads). How to manage optimally this unlock code? Maintenance users should be able to access the unlock ...
2
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2answers
166 views

Is this password inside a file secure? A security paradox

Preamble: I have been a long time lurker but first time poster to the Information Security site, so please be gentle with me. The Situation: I ran into a situation where I needed to securely store a ...
9
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7answers
2k views

How to securely counter users from adding a single digit to their old password upon creating a new one? [duplicate]

Let's say that in the password policy the password history is defined to remember the last 10 passwords. I understand password history exists so that if a password is recovered from a compromised ...
5
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1answer
113 views

How to implement a password change policy when user's centralized password is in a lot of places?

I would like to implement password changing in an organization but they have the domain controller/LDAP passwords "all over the place". They have the passwords in a lot of places, for example, in ...
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1answer
67 views

Storing credentials for desktop app

I have desktop application written in C# with three user roles and some predefined users. It is also possible to create another users or change passwords to predefined users. App has to work offline ...
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2answers
42 views

What could be a suitable solution to single factor authorization worksheet bank password circulation with no control?

Passwords for various banks are written in an excel sheet and this excel sheet is password protected. However, there is no control on circulation of this sheet, for many banks only single factor ...
12
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4answers
1k views

Does an *additional* company-wide password offer any real security?

So, let's say a company has what could be referred to as an "access key". Each user has their own username and password, and there is an additional company-wide access key that people must input with ...
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4answers
252 views

Complex password rules - is there any sense?

Let us assume that our system is well designed and it limits the amount of login errors so that brute force attach on the user interface is not possible. Say after 5 failed logins for an account the ...
0
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1answer
425 views

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 ...
2
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2answers
136 views

Is logging a hashed password safe?

I'm creating a login module for Wildfly by extending org.jboss.security.auth.spi.DatabaseServerLoginModule and using log4j2 for debugging. I've gotten into the habit of using log4j2's Logger.entry() ...
2
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4answers
173 views

Is it good practice to mandate input action on the password field in a webapp?

I am of the school of thought that says you should never have the browser "remember your password" because if you use it often enough, you will be able to retain that piece of information. I now want ...
3
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3answers
107 views

how is strength of password calculated from standard keyboard patterns?

In password strength calculator is there an algorithm to determine the keyboard pattern? there could be thousands if not millions of patterns that could be generated with a standard qwerty keyboard. ...
25
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6answers
3k views

Do spaces in a passphrase really add any more security/entropy?

I often see passphrase suggestions written as a sentence, with spaces. In that format are they more susceptible to a dictionary attack because each word is on it's own as opposed to a large unbroken ...
8
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4answers
118 views

Secure Memorable Passwords for Older Users

As with many people who work in IT I have found myself in the position of providing technical support for older relatives. Most of these relatives are not technically savvy and hate the idea of ...
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7answers
2k views

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

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 ...
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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 ...