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As the primary mechanism of digital authentication, user-created passwords exhibit common patterns and regularities that can be learned from leaked datasets. Password choices are profoundly shaped by external factors, including social…

Cryptography and Security · Computer Science 2025-10-28 Xudong Yang , Jincheng Li , Kaiwen Xing , Zhenjia Xiao , Mingjian Duan , Weili Han , Hu Xiong

Passwords are the most common mechanism for authenticating users online. However, studies have shown that users find it difficult to create and manage secure passwords. To that end, passphrases are often recommended as a usable alternative…

Cryptography and Security · Computer Science 2023-03-17 Avirup Mukherjee , Kousshik Murali , Shivam Kumar Jha , Niloy Ganguly , Rahul Chatterjee , Mainack Mondal

Human-chosen passwords are the a dominant form of authentication systems. Passwords strength estimators are used to help users avoid picking weak passwords by predicting how many attempts a password cracker would need until it finds a given…

Cryptography and Security · Computer Science 2020-05-06 Liron David , Avishai Wool

A password composition policy restricts the space of allowable passwords to eliminate weak passwords that are vulnerable to statistical guessing attacks. Usability studies have demonstrated that existing password composition policies can…

Cryptography and Security · Computer Science 2013-02-26 Jeremiah Blocki , Saranga Komanduri , Ariel Procaccia , Or Sheffet

Although it is common for users to select bad passwords that can be easily cracked by attackers, password-based authentication remains the most widely-used method. To encourage users to select good passwords, enterprises often enforce…

Cryptography and Security · Computer Science 2015-12-21 Cem S. Sahin , Robert Lychev , Neal Wagner

As network security issues continue gaining prominence, password security has become crucial in safeguarding personal information and network systems. This study first introduces various methods for system password cracking, outlines…

Cryptography and Security · Computer Science 2026-02-11 Jiazhi Mo , Hailu Kuang , Xiaoqi Li

We present an in-depth analysis on the strength of the almost 10,000 passwords from users of an instant messaging server in Italy. We estimate the strength of those passwords, and compare the effectiveness of state-of-the-art attack methods…

Cryptography and Security · Computer Science 2009-07-21 Matteo Dell'Amico , Pietro Michiardi , Yves Roudier

User-chosen passwords remain essential to online security, and yet people continue to choose weak, insecure passwords. In this work, we investigate whether prospect theory, a behavioral model of how people evaluate risk, can provide…

Cryptography and Security · Computer Science 2022-01-06 Eryn Ma , Summer Hasama , Eshaan Lumba , Eleanor Birrell

Despite their well-known security problems, passwords are still the incumbent authentication method for virtually all online services. To remedy the situation, end-users are very often referred to password managers as a solution to the…

Cryptography and Security · Computer Science 2017-12-27 Sanam Ghorbani Lyastani , Michael Schilling , Sascha Fahl , Sven Bugiel , Michael Backes

Passwords remain one of the most common methods for securing sensitive data in the digital age. However, weak password choices continue to pose significant risks to data security and privacy. This study aims to solve the problem by focusing…

Cryptography and Security · Computer Science 2025-06-03 Pappu Jha , Hanzla Hamid , Oluseyi Olukola , Ashim Dahal , Nick Rahimi

Text-based secrets are still the most commonly used authentication mechanism in information systems. IT managers must strike a balance between security and memorability while developing password policies. Initially introduced as more secure…

Cryptography and Security · Computer Science 2021-12-08 Noopa Jagadeesh , Miguel Vargas Martin

Passphrases offer an alternative to traditional passwords which aim to be stronger and more memorable. However, users tend to choose short passphrases with predictable patterns that may reduce the security they offer. To explore the…

Cryptography and Security · Computer Science 2021-10-19 Christopher Bonk , Zach Parish , Julie Thorpe , Amirali Salehi-Abari

Among the various means of available resource protection including biometrics, password based system is most simple, user friendly, cost effective and commonly used. But this method having high sensitivity with attacks. Most of the advanced…

Cryptography and Security · Computer Science 2009-10-13 Manoj Kumar Singh

Text password has served as the most popular method for user authentication so far, and is not likely to be totally replaced in foreseeable future. Password authentication offers several desirable properties (e.g., low-cost, highly…

Cryptography and Security · Computer Science 2022-12-27 Lam Tran , Thuc Nguyen , Changho Seo , Hyunil Kim , Deokjai Choi

Password managers are important tools that enable us to use stronger passwords, freeing us from the cognitive burden of remembering them. Despite this, there are still many users who do not fully trust password managers. In this paper, we…

Cryptography and Security · Computer Science 2021-06-22 Miguel Grilo , João F. Ferreira , José Bacelar Almeida

Probabilistic password strength meters have been proved to be the most accurate tools to measure password strength. Unfortunately, by construction, they are limited to solely produce an opaque security estimation that fails to fully support…

Cryptography and Security · Computer Science 2021-05-13 Dario Pasquini , Giuseppe Ateniese , Massimo Bernaschi

Leaked passwords from data breaches can pose a serious threat to users if the password is reused elsewhere. With more online services getting breached today, there is still a lack of large-scale quantitative understanding of the risks of…

Cryptography and Security · Computer Science 2017-06-09 Chun Wang , Steve T. K. Jan , Hang Hu , Gang Wang

Password updates are a critical account security measure and an essential part of the password lifecycle. Service providers and common security recommendations advise users to update their passwords in response to incidents or as a critical…

Cryptography and Security · Computer Science 2025-11-17 Alexander Krause , Jacques Suray , Lea Schmüser , Marten Oltrogge , Oliver Wiese , Maximilian Golla , Sascha Fahl

Large-scale password data breaches are becoming increasingly commonplace, which has enabled researchers to produce a substantial body of password security research utilising real-world password datasets, which often contain numbers of…

Cryptography and Security · Computer Science 2024-03-18 Saul Johnson , João Ferreira , Alexandra Mendes , Julien Cordry

The choice of password composition policy to enforce on a password-protected system represents a critical security decision, and has been shown to significantly affect the vulnerability of user-chosen passwords to guessing attacks. In…

Cryptography and Security · Computer Science 2024-03-18 Saul Johnson , João F. Ferreira , Alexandra Mendes , Julien Cordry
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