Specific to the security of passwords: hashing, entropy, cracking, resets, lockouts, etc.

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How does RealVNC Enterprise Know My System Credential?

After the installation of RealVNC on a Windows computer, the default login username and password via VNC is the same as the system username and password. Can anyone tell me how RealVNC can access such ...
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0answers
23 views

can my PC be hacked from a different network? [on hold]

please, i will like to know if a PC on a different network can be hacked to gain full access remotely. for example, i am at home surfing the net, and a hacker hacks into my pc from a different country ...
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2answers
57 views

Is it a bad idea to add random characters to user ID and password?

I've heard people say again and again that you shouldn't implement your own security algorithm, and I'd like to ask you if I'm breaking this rule. I'm creating a traditional client-server application ...
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2answers
74 views

is it feasible to improve the entropy of XKCD #936 by using a larger dictionary?

XKCD #936 uses a limited subset of the English language, only 2000 words. I just looked it up, and the English language has over a million words, a sizeable subset of those having special characters, ...
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1answer
36 views

Crackstation “Secure Salted Password” Java example - is it really secure?

I'm making an auth service so I've been looking for some good Java/Groovy implementations of password + salt hashing. I've found this article on crackstation along with a code example and decided to ...
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1answer
22 views

Can a PKCS12 file be distributed over insecure channel?

Is the PKCS12 only as secure as the password protecting private keys ? Can I distribute the p12 file over an insecure channel ?
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5answers
2k views

What is the best way to transmit password hash over unreliable TLS?

I have TLS connection between my server and client. I have no certificate, so the connection is susceptible to the Man-in-the-middle attack. I fear that attacker could intercept the password hash ...
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5answers
3k views

Are passwords comprised of key sequences on a keyboard any less secure than the same characters but jumbled up?

Here are two passwords: 5678%^&*tyuiTYUI and 8^tyU75%*IuY6T&i Both have the same number of characters and in each the characters are identical, the only difference is that the first ...
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2answers
96 views

Will hashing passwords in my use case improve security and why?

I am developing an application the architecture of which is arranged as follows: Session host <---> Central relay server <---> Session client All communication between the initiating ...
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1answer
61 views

Is it a good idea to expire passwords after a time relative to their security?

If a user has to change their password ever so often, is it a good thing to check it against zxcvbn or similar library and assign a expiration date relative to the risk of the hash being cracked?
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2answers
72 views

Storing lots of passwords that different levels of employees need access to

I am wondering what other people do for storing passwords. Our current model at my employer is fundamentally flawed in my opinion, so I am trying to see what other people do so I can select the best ...
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6answers
6k views

Are passwords that are manually typed in really unrecoverable from memory or disk?

As part of an increase in the security measures for our company, we're moving to making sure all password logins (databases, servers, etc), are done through a password prompt and never using stored ...
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61 views

LastPass is disappointing, how about Dashlane or others? [closed]

I am currently using LastPass, and I'm not happy about it and a bit disappointed. Here are a few issues that I found out, no multiple credit card support, multiple phone numbers support is confusing ...
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2answers
66 views

How to transform an hash into a usable password?

I was reading about PwdHash and it inspired me to create a little project where you input a master password and an easy to remember alias into a password hash, like bcrypt, and then you get an hash. ...
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0answers
31 views

I forgot my ZIP file password. How do I bypass the encryption? Which software would work? [duplicate]

Should I use brute-force attacks? Do they even work? What options do I have? I only remember short fragments of the password and it's definitely more than 7 characters long.
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2answers
46 views

Is authenticating via the database secure

Sorry for this probably noobish question. So far, I've read password comparison/verification is implicitly understood to be made on the application layer and not in the database. For example in PHP, ...
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1answer
58 views

Can I get rid of storing user secrets by using OpenID, and what do I need to store?

What information do you have to keep about a user to be an OpenID consumer? I want to use OpenID to let users register and authenticate on my system. So while I'm at it I want to not duplicate ...
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3answers
1k views

Store password locally. Where? How to pass it securely?

I'm developing an application. The user must enter his credentials which will be sent to the server. If the user opens the application a second time he shouldn't need to enter them again - credentials ...
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1answer
25 views

How can I defend against Heroku (or any PAAS) ID theft?

How can I defend against Heroku (or any PAAS) ID theft? Is it correct to assume that if someone obtained my Heroku credentials that they would have access to any data in my app, regardless of any ...
2
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1answer
45 views

Is it sensible to use application password bypassing two factor authentication? [duplicate]

I discovered that some applications (like Sylpheed) seems unable to support two factor authentication. Google has a feature called application passwords - a separate password that "grants complete ...
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1answer
24 views

Storing server generated passwords

There are some applications that generate passwords for you. Consider a case where you sign in via Facebook, the application (let's call it NEWAPP) verifies your sign in on the server using FB tokens ...
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3answers
698 views

How to encrypt all existing customer passwords [closed]

I work for an online shop and since I worked here we have stored customer passwords in plaintext. I joined the company as a data inputter and when I discovered that we did this I flagged it up with ...
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5answers
3k views

Using Google Search results to determine password strength

Google is a repository of Internet data, as it indexes tremendous amount of data. It uses a prediction service to determine the rest of the search query. With such a huge repository in place, can we ...
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2answers
54 views

Storing random initial (one-time) passwords in plain text

I manage a vendor app that issues passwords to end users. From what I can see, final user passwords are stored properly. My concern is the initial generation and communication step. The app has many ...
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1answer
96 views

When bruteforcing a WiFi network password, Can that admin see it?

When bruteforcing a captured packet containing the encrypted password, can the owner/admin of the router see each auth attempt? I'm assuming you just encrypt each passphrase in the dictionary file and ...
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1answer
64 views

Brute force attacks detection risks

I would like to ask if using brute force attacks on some websites or online services can be risky in any way for the hacker? Let's say that someone is using medusa tool to crack password on his ...
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5answers
241 views

Are all unsalted password hashes inherently insecure?

Maybe I'm missing something obvious... Are all passwords stored in common, unsalted hash algorithms able to be attacked via rainbow tables?
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22 views

How rainbow table works? [duplicate]

I have roughly understand how a rainbow table works from http://en.wikipedia.org/wiki/Rainbow_table, but I am quite curious why there is a need of different reduction functions for each column for ...
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1answer
52 views

Are there best practices concerning application account credentials?

I am looking for best practices concerning application account credentials. For example, suppose I got a corporate application which uses an Active Directory application user account to communicate ...
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4answers
197 views

how to check for duplicate passwords

Is it possible to check if like 100 people are using the same pasword? without risking anyones password getting out? I heard google does this, not allowing the user to set a password 1000 people are ...
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1answer
19 views

How to use multiple charsets in hashcat

I wanted to use a brute force attack on hashcat but WPA/WPA2 networks are 8-64 characters long and they have multiple possibilities of a password. I was wondering if there was a way to use multiple ...
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1answer
43 views

How do you practically manage your never-use-personal-accounts-on-a-work-machine-ever double life, when your personal machine is a limited iOS device? [closed]

This is follow-up to Starting a new job after working at home for years. How to best protect data, secrets, and privacy in the workplace? The answer to that question is Follow company security ...
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1answer
71 views

Starting a new job after working at home for years. How to best protect data, secrets, and privacy in the workplace?

I have just started interviewing for new computer job after years of working from home. At home I feel very secure with how I protect myself from data loss and keeping my secrets secure. I backup ...
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122 views

Any problems with scrypt yet?

In the question Do any security experts recommend bcrypt for password storage? Thomas Pornin recommends the hashing function scrypt but saying it is "too new to be recommended on a general basis". ...
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2answers
294 views

Is fourteen characters long password really weak?

I've tried to sign in to Samsung Cyber Service Center1. Since I'm from Poland, at first I tried Polish version of that service. I have entered a password, that has: 6 numbers in total (in three ...
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4answers
3k views

What is the purpose of the “Password minimum age” setting?

What additional security can a "password minimum age" provide? For example: the user can change their password only after 24 hours have elapsed since the last password change.
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0answers
36 views

Simple but very long password [duplicate]

Is it safe to use simple but very long passwords? e.g: YaddaYaddaYaddaYaddaYaddaYaddaYaddaYaddaYaddaYaddaYaddaYaddaYadda what if I use a non-dictionary word? e.g: ...
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1answer
44 views

Storing salt and hashed password [duplicate]

Is there a benefit to storing salt appended to hashed password in a single column of a table verses storing salt and hashed password in different columns of the table. The OWASP guide here ...
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2answers
41 views

Can I prevent brute forcing of hashed+salted user passwords without a dedicated validation server? [duplicate]

Salted hashes don't seem to offer any real protection for user passwords by itself. So long as a hacker has a quick way to check if a password is right or wrong, it's trivial to brute force it to view ...
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1answer
95 views

Password entry on OS X and keyloggers

There's several places in my ‘personal security infrastructure’ (is there a better phrase for that?) where I find myself typing very important passwords into text-fields on OS X (for instance, ...
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4answers
828 views

Does it indicate a bad password system to disallow certain characters in passwords?

When creating an account to the game League of Legends, the user's password must comply to a few rules. The one I'm concerned about is the "Must not contain slashes or spaces" one. The others are ...
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2answers
590 views

How can I find out the password hashing schemes used by the specific Unix accounts I log in to?

Every day I ssh in to 3 or 4 independent Unix accounts. I have been regarding them as more or less "equivalently secure" on the grounds that I'm using ssh, but after learning of how much variety ...
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1answer
136 views

Security of LastPass' password generator

I currently use LastPass for all of my password generation and management. After reading Diceware, I realized that LastPass' password generator might be insecure, as somebody could potentially ...
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2answers
80 views

What is the evaluation criteria that a site uses for a password as strong , moderate or less secure

I have been in kind of jinx as to how a website decides on which password is highly vulnerable , strong etc . Lately my yahoo account was told to change password which I am using for long time as the ...
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41 views

THC-Hydra dictionary attack on JSP login form

I am trying to use Hydra to attack a JSP form but I have some confusion. Normally we use command something like this hydra -L list_user -P list_password HOST-ADDRESS http-post-form ...
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8answers
6k views

Is forcing users to use a strong password effective?

I am designing a service that would, among other things, store sensitive information. To ensure no unauthorized access of this information, it would be encrypted with a key derived from their password ...
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1answer
81 views

Office password protection crack

would just like to have a check on the password protection/encryption of MS office 2007 and above. It is said that its not that easy to crack the password protection except by brute force, since 2007 ...
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0answers
31 views

THC-Hydra - one good pass = shows all valid [duplicate]

As in title. I'm testing my router security and I came up with problem. hydra 192.168.0.1 http-get-form "/:un=^USER^&pw=^PASS^:User Name or Password is incorrect." -L usernames -P passwords ...
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20 views

Preventing Quantum Attacks on Cryptography [migrated]

With the advancement of technology in quantum computing, it's becoming more evident that we need to start thinking about protecting the future integrity of our cryptographic standards. What can we do ...
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1answer
86 views

How to store passwords to a remote web site?

Say I want to build a public API to access a website that doesn't have one. The website is protected by a standard username/password scheme and the API implementation will use scraping to get the data ...