Email spam filtering: A systematic review
GV Cormack - Foundations and Trends® in Information …, 2008 - nowpublishers.com
Spam is information crafted to be delivered to a large number of recipients, in spite of their
wishes. A spam filter is an automated tool to recognize spam so as to prevent its delivery …
wishes. A spam filter is an automated tool to recognize spam so as to prevent its delivery …
A Survey on Breaking Technique of Text‐Based CAPTCHA
J Chen, X Luo, Y Guo, Y Zhang… - Security and …, 2017 - Wiley Online Library
The CAPTCHA has become an important issue in multimedia security. Aimed at a commonly
used text‐based CAPTCHA, this paper outlines some typical methods and summarizes the …
used text‐based CAPTCHA, this paper outlines some typical methods and summarizes the …
Word spotting in the wild
K Wang, S Belongie - Computer Vision–ECCV 2010: 11th European …, 2010 - Springer
We present a method for spotting words in the wild, ie, in real images taken in unconstrained
environments. Text found in the wild has a surprising range of difficulty. At one end of the …
environments. Text found in the wild has a surprising range of difficulty. At one end of the …
Asirra: a CAPTCHA that exploits interest-aligned manual image categorization.
ABSTRACT We present Asirra (Figure 1), a CAPTCHA that asks users to identify cats out of
a set of 12 photographs of both cats and dogs. Asirra is easy for users; user studies indicate …
a set of 12 photographs of both cats and dogs. Asirra is easy for users; user studies indicate …
A Low-cost Attack on a Microsoft CAPTCHA
J Yan, AS El Ahmad - Proceedings of the 15th ACM conference on …, 2008 - dl.acm.org
CAPTCHA is now almost a standard security technology. The most widely deployed
CAPTCHAs are text-based schemes, which typically require users to solve a text recognition …
CAPTCHAs are text-based schemes, which typically require users to solve a text recognition …
No bot expects the DeepCAPTCHA! Introducing immutable adversarial examples, with applications to CAPTCHA generation
M Osadchy, J Hernandez-Castro… - IEEE Transactions …, 2017 - ieeexplore.ieee.org
Recent advances in deep learning (DL) allow for solving complex AI problems that used to
be considered very hard. While this progress has advanced many fields, it is considered to …
be considered very hard. While this progress has advanced many fields, it is considered to …
How good are humans at solving CAPTCHAs? A large scale evaluation
Captchas are designed to be easy for humans but hard for machines. However, most recent
research has focused only on making them hard for machines. In this paper, we present …
research has focused only on making them hard for machines. In this paper, we present …
Usability of CAPTCHAs or usability issues in CAPTCHA design
J Yan, AS El Ahmad - Proceedings of the 4th symposium on Usable …, 2008 - dl.acm.org
CAPTCHA is now almost a standard security technology, and has found widespread
application in commercial websites. Usability and robustness are two fundamental issues …
application in commercial websites. Usability and robustness are two fundamental issues …
What's up CAPTCHA? A CAPTCHA based on image orientation
R Gossweiler, M Kamvar, S Baluja - Proceedings of the 18th international …, 2009 - dl.acm.org
We present a new CAPTCHA which is based on identifying an image's upright orientation.
This task requires analysis of the often complex contents of an image, a task which humans …
This task requires analysis of the often complex contents of an image, a task which humans …
[PDF][PDF] Computers beat humans at single character recognition in reading based human interaction proofs (HIPS).
Human interaction proofs (HIPs) have become commonplace on the internet for protecting
free online services from abuse by automated scripts/bots. They are challenges designed to …
free online services from abuse by automated scripts/bots. They are challenges designed to …