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» Selecting Secure Passwords
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CCS
2010
ACM
14 years 12 months ago
The security of modern password expiration: an algorithmic framework and empirical analysis
This paper presents the first large-scale study of the success of password expiration in meeting its intended purpose, namely revoking access to an account by an attacker who has ...
Yinqian Zhang, Fabian Monrose, Michael K. Reiter
CCS
2005
ACM
15 years 5 months ago
Fast dictionary attacks on passwords using time-space tradeoff
Human-memorable passwords are a mainstay of computer security. To decrease vulnerability of passwords to bruteforce dictionary attacks, many organizations enforce complicated pass...
Arvind Narayanan, Vitaly Shmatikov
USS
2008
15 years 2 months ago
Panic Passwords: Authenticating under Duress
Panic passwords allow a user to signal duress during authentication. We show that the well-known model of giving a user two passwords, a `regular' and a `panic' password...
Jeremy Clark, Urs Hengartner
CORR
2011
Springer
167views Education» more  CORR 2011»
14 years 3 months ago
The weak password problem: chaos, criticality, and encrypted p-CAPTCHAs
- Vulnerabilities related to weak passwords are a pressing global economic and security issue. We report a novel, simple, and effective approach to address the weak password probl...
T. V. Laptyeva, S. Flach, K. Kladko
CHI
2009
ACM
16 years 8 days ago
A comprehensive study of frequency, interference, and training of multiple graphical passwords
Graphical password systems have received significant attention as one potential solution to the need for more usable authentication, but nearly all prior work makes the unrealisti...
Katherine Everitt, Tanya Bragin, James Fogarty, Ta...