A captcha that exploits interest-aligned manual image categorization

Asirra: a CAPTCHA that exploits interest-aligned manual image categorization. Share on. Asirra: a CAPTCHA that exploits interest-aligned manual image categorization. Pages – Previous Chapter Next Chapter. Comments. Login options. Check if you have access through your login credentials or your institution to get full access on this. CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): 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 it can be solved by humans % of the time in under 30 seconds.  · CAPTCHA is an acronym for Completely Automated Public Turing Test To Tell Computers and Humans Apart. CAPTCHA may be described as a cyber security tool often used on websites. Websites that offer a service or collect data require the user to give inputs. This process can be thwarted with the use of bots. Bots can present themselves as humans with fake identities.

The Asirra CAPTCHA [7], proposed at ACM CCS , relies on the problem of distinguishing images of cats and dogs (Asirra stands for \Animal Species Image Recognition for Restricting Access"). An Asirra challenge consists of 12 images, each of which is of either a cat or a dog. CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): 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 it can be solved by humans % of the time in under 30 seconds. BibTeX @INPROCEEDINGS{Elson07asirra:a, author = {Jeremy Elson and John R. Douceur and Jon Howell and Jared Saul}, title = {Asirra: A captcha that exploits interest-aligned manual image categorization}, booktitle = {In 4th ACM CCS}, year = {}}.

22 thg 2, This classifier allows us to solve a image Asirra The next step was to manually CAPTCHA that exploits interest-aligned manual. images for use in a re- trieval setting by exploiting the need for CAPTCHAs (Com- Asirra: a CAPTCHA that exploits interest-aligned manual im-. CAPTCHA that exploits interest-aligned manual image categorization. In Proceed- ings of the ACM Conference on Computer and Communications Security. –