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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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
58 views

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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0answers
25 views

How many possible combinations in 8 character password? [migrated]

I need to calculate the possible combinations for 8 characters password. The password must contain at least one of the following: (lower case letters, upper case letters, digits, punctuations, special ...
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3answers
139 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 ...
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2answers
98 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
496 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
58 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
150 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
75 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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3answers
91 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
582 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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3answers
57 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
67 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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3answers
131 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
46 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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2answers
99 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
212 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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2answers
293 views

What are the pros and cons of using a password safe instead of writing passwords on paper?

Many companies have policy again writing passwords and paper and I wonder if there reasoning is sound. Is it always better to use a software password safe than writing passwords on paper? Here are ...
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2answers
165 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 ...
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2answers
92 views

Using the same base string for a password in several different logins [duplicate]

It is clear to me that using the same password for different websites is a bad idea because if an attacker manages to get a hold of your password, then he can gain access to the other websites in ...
2
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3answers
124 views

Where did common “minimum password length” guidelines originate?

Not long ago, the common wisdom was that passwords should be at least 8 characters long. These days, the most common minimum is 12. Where did these common values originate? Interestingly, 8 is ...
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3answers
215 views

Should I trust my bank after this [closed]

I have just discovered that I can login to my bank with passwords that is not mine. Example: My password is "1234" but I am authorized with all possible post characters. For example "12345" or ...
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4answers
265 views

Should user's password strength be assessed at client or at server side?

Now most of big website like Google mail, Twitter, Facebook have a feature that assesses password strength (check number of digit, alphabet, special characters, or check the similarity over already ...
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6answers
212 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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4answers
343 views

How to tell if a site is securely storing passwords? [closed]

A site I frequent has a policy to make you change your password every 90 days. That's a cool policy, but I stumbled upon an old xkcd and facepalmed myself, because lots of doxing happens on this site. ...
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2answers
535 views

Are the SS64.com password generators a good approach?

There are two password generators on ss64.com: The standard one The strong one How they work I made standalone versions of them, plus copy of the original HTML/Javascript versions, if you want to ...
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3answers
295 views

Is Password Complexity required at all

For a web-site I'm using what I hope is the most secure password storage scheme I can find, which boils down to having a salt and hashed password stored in a database of contacts:- Byte[] ...
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6answers
192 views

Why does everyone require certain password characters now? [closed]

I understand that passwords with varying cases (upper and lower) as well as numbers and special characters are much "stronger" and harder to crack than those that are short and all lowercase or ...
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3answers
409 views

Requirement to send username and password in distinct email messages

I have an application that sends username and a password by email (random temporary password, mandatory change on first login). A big customer has this policy of "never send username and password in ...
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1answer
2k views

How does Activesync security policy affect the usage of the iOS fingerprint scanner?

An Activesync IT administrator has the ability to choose if the phone should require a password, and also how complex it should be. Since the fingerprint scanner appears to replace the traditional ...
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4answers
187 views

Is there any risk in allowing more more failed login attempts before autobanning for a longer time?

By default most software seems to have rather low "burst" settings, like 3 to 5 login attempts before a temporary autoban for a couple minutes. Especially banks have a very low limit before access is ...
17
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1answer
754 views

Does a maximum length of password mean non-hashed storage?

When a system requires a password between say 6 and 20 characters in length, does it mean the password is stored without using a hashing function, and that the mysql-field (or similar) is 20 ...
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3answers
429 views

Password Security and ocl-Hashcat-plus

I recently read the Ars Technical Article about new features in ocl-Hashcat-plus. In light of questions like: Long Passwords: How are they more secure? and XKCD #936: Short complex password, or ...
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4answers
198 views

Why do some passwords not allow certain types of characters?

Is there any programing related reason why some password cannot have certain characters? If the idea in storing a password is to store it's hash, since a hashing function can take any input (ok at ...
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5answers
4k 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 ...
27
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4answers
2k views

Is it safe to show users why their password is not allowed?

/////////////////////////////// Updated Post Below //////////////////////////// This question has received a lot of hits, more than I ever thought it would have on such a basic topic. So, I ...
29
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5answers
2k views

Are there any guidelines for passwords that need to be read out loud?

I recently saw the movie Olympus Has Fallen. Like in many action movies, at the end a missile is launched, and the hero (Mike Banning, played by Gerard Butler) has 60 seconds to recall the launch in ...
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3answers
533 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 ...
0
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2answers
155 views

Is my domain registrar storing my password in cleartext? [closed]

I called my domain registrar (unnamed here but not difficult to find out and a major provider) about a year ago to have them change some DNS settings. While on the phone, the customer service rep had ...
6
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2answers
268 views

What does “Change your password everywhere else” e-mail from compromised service mean?

I've recieved an e-mail from ubuntuforums.org a couple of hours ago: [...] the attacker has gained access to read your username, email address and an encrypted copy of your password from the forum ...
4
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2answers
371 views

Would a massive blacklist of guessable passwords be useful? [duplicate]

Suggestions to make a good password all focus on creating a string that a computer (or more likely, a network of computers with multiple GPUs) can not guess. Putting a password meter for when users ...
27
votes
3answers
1k views

Is there a security reason for a site to limit the number of times a user can change their password?

Is there a security reason to disallow a user to change their password as frequently as they want? I have found this security policy in a site and I am not sure why it is enforcing it. One reason I ...
2
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5answers
273 views

Is accepting old passwords a bad policy?

This question is inspired by an experience I had today with online banking, as follows. One year ago I opened an online deposit account. (Without naming the bank, I will say the company is currently a ...
0
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1answer
567 views

Why do website limit password length? [duplicate]

I just made a new account with some eGov service (Belgian government). I use LastPass (generate long random strings for each site). But the system told me that the maximum allow length was 16 ASCII ...
3
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0answers
242 views

Similar passwords can't be used again. A sign of unhashed password storage? [duplicate]

In my school everyone must change their password every six months. The new passwords cannot be the exact same as the old one, this make sense, however many of my peers often complain that they need ...
2
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2answers
122 views

What are the vulnerabilities of reusing passwords for generation of keys and encrypted files?

The main reason why reusing a password for different accounts is not recommended is that if the password is compromised, all accounts are compromised. This question is about vulnerabilities other ...
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5answers
1k 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 ...
24
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10answers
4k 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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1answer
831 views

Good Password Length [duplicate]

If you are looking to be careful and your passwords include all the types of characters, what is the ideal password length?