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Honeywords are decoy passwords that can be added to a credential database; if a login attempt uses a honeyword, this indicates that the site's credential database has been leaked. In this paper we explore the basic requirements for…

Cryptography and Security · Computer Science 2024-03-07 Zonghao Huang , Lujo Bauer , Michael K. Reiter

Personal Identification Numbers (PINs) are commonly used as an authentication mechanism. An important security requirement is that PINs should be hard to guess for an attacker. On the other hand, remembering several random PINs can be…

Cryptography and Security · Computer Science 2013-02-13 Lubica Staneková , Martin Stanek

Risk-based authentication (RBA) aims to protect users against attacks involving stolen passwords. RBA monitors features during login, and requests re-authentication when feature values widely differ from previously observed ones. It is…

Cryptography and Security · Computer Science 2022-11-11 Stephan Wiefling , Paul René Jørgensen , Sigurd Thunem , Luigi Lo Iacono

Passwords should be easy to remember, yet expiration policies mandate their frequent change. Caught in the crossfire between these conflicting requirements, users often adopt creative methods to perform slight variations over time. While…

Cryptography and Security · Computer Science 2020-09-18 Davide Berardi , Franco Callegati , Andrea Melis , Marco Prandini

The use of passwords and the need to protect passwords are not going away. The majority of websites that require authentication continue to support password authentication. Even high-security applications such as Internet Banking portals,…

Networking and Internet Architecture · Computer Science 2020-11-13 Teik Guan Tan , Pawel Szalachowski , Jianying Zhou

Reliably knowing when a language model is correct is almost as important as being correct. We introduce prover-verifier deliberation (PVD), an inference-time protocol grounded in interactive proof theory, as a mechanism for selective…

Artificial Intelligence · Computer Science 2026-05-26 João Sedoc , Baotong Zhang , Dean Foster

"Honeywords" have emerged as a promising defense mechanism for detecting data breaches and foiling offline dictionary attacks (ODA) by deceiving attackers with false passwords. In this paper, we propose PassFilter, a novel deep learning…

Cryptography and Security · Computer Science 2024-07-25 Jimmy Dani , Brandon McCulloh , Nitesh Saxena

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

Decoy passwords, or "honeywords," planted in a credential database can alert a site to its breach if ever submitted in a login attempt. To be effective, some honeywords must appear at least as likely to be user-chosen passwords as the real…

Cryptography and Security · Computer Science 2023-11-22 Ke Coby Wang , Michael K. Reiter

In this paper, we propose a tool, called DataProVe, for specifying high-level data protection policies and system architectures, as well as verifying the conformance between them in a fully automated way. The syntax of the policies and the…

Cryptography and Security · Computer Science 2020-12-18 Vinh Thong Ta

Passwords are the primary authentication method online, but even with password policies and meters, users still find it hard to create strong and memorable passwords. In this paper, we propose DPAR: a Data-driven PAssword Recommendation…

Cryptography and Security · Computer Science 2024-06-06 Assaf Morag , Liron David , Eran Toch , Avishai Wool

Neural networks are susceptible to data inference attacks such as the membership inference attack, the adversarial model inversion attack and the attribute inference attack, where the attacker could infer useful information such as the…

Machine Learning · Computer Science 2022-12-02 Ziqi Yang , Lijin Wang , Da Yang , Jie Wan , Ziming Zhao , Ee-Chien Chang , Fan Zhang , Kui Ren

Existing SQL access control mechanisms are extremely limited. Attackers can leak information and escalate their privileges using advanced database features such as views, triggers, and integrity constraints. This is not merely a problem of…

Cryptography and Security · Computer Science 2016-11-18 Marco Guarnieri , Srdjan Marinovic , David Basin

In today's world, computer networks have become vulnerable to numerous attacks. In both wireless and wired networks, one of the most common attacks is man-in-the-middle attacks, within which session hijacking, context confusion attacks have…

Cryptography and Security · Computer Science 2022-02-02 Kailash Gogineni , Yongsheng Mei , Guru Venkataramani , Tian Lan

The majority of systems rely on user authentication on passwords, but passwords have so many weaknesses and widespread use that easily raise significant security concerns, regardless of their encrypted form. Users hold the same password for…

Cryptography and Security · Computer Science 2021-01-22 Vassilis Papaspirou , Leandros Maglaras , Mohamed Amine Ferrag , Ioanna Kantzavelou , Helge Janicke , Christos Douligeris

Vulnerability Discovery with attack Injection security threats are increasing for the server software, when software is developed, the software tested for the functionality. Due to unawareness of software vulnerabilities most of the…

Networking and Internet Architecture · Computer Science 2014-02-12 G. Vijay Kumar , Ravikumar S. Raykundaliya , Dr. P. Naga Prasad

Password users frequently employ passwords that are too simple, or they just reuse passwords for multiple websites. A common complaint is that utilizing secure passwords is too difficult. One possible solution to this problem is to use a…

Cryptography and Security · Computer Science 2019-06-04 Elan Rosenfeld , Santosh Vempala , Manuel Blum

Regular expressions are a concise yet expressive language for expressing patterns. For instance, in networked software, they are used for input validation and intrusion detection. Yet some widely deployed regular expression matchers based…

Programming Languages · Computer Science 2013-01-08 James Kirrage , Asiri Rathnayake , Hayo Thielecke

This paper presents a visual passwords system to increase security. The system depends mainly on recognizing the speaker using the visual speech signal alone. The proposed scheme works in two stages: setting the visual password stage and…

Computer Vision and Pattern Recognition · Computer Science 2014-09-04 Ahmad Basheer Hassanat

Traditional text-based password schemes are inherently weak. Users tend to choose passwords that are easy to remember, making them susceptible to various attacks that have matured over the years. ObPwd [5] has tried to address these issues…

Cryptography and Security · Computer Science 2018-01-23 Sufian Hameed , Lamak Qaizar , Shankar Khatri