Is It Human or Computer? Defending E-Commerce with Captchas

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March/April 2005 (vol. 7 no. 2)

pp. 43-49

	ASCII Text	x
	Clark Pope, Khushpreet Kaur, "Is It Human or Computer? Defending E-Commerce with Captchas," IT Professional, vol. 7, no. 2, pp. 43-49, March/April, 2005.

	BibTex	x
	@article{ 10.1109/MITP.2005.37, author = {Clark Pope and Khushpreet Kaur}, title = {Is It Human or Computer? Defending E-Commerce with Captchas}, journal ={IT Professional}, volume = {7}, number = {2}, issn = {1520-9202}, year = {2005}, pages = {43-49}, doi = {http://doi.ieeecomputersociety.org/10.1109/MITP.2005.37}, publisher = {IEEE Computer Society}, address = {Los Alamitos, CA, USA}, }

	RefWorks Procite/RefMan/Endnote	x
	TY - MGZN JO - IT Professional TI - Is It Human or Computer? Defending E-Commerce with Captchas IS - 2 SN - 1520-9202 SP43 EP49 EPD - 43-49 A1 - Clark Pope, A1 - Khushpreet Kaur, PY - 2005 KW - security KW - Captcha KW - Turing test KW - e-commerce KW - system administration KW - system management KW - spam KW - Gimpy KW - Bongo KW - Baffle Text KW - Pessimal Print KW - Pix. VL - 7 JA - IT Professional ER -

Clark Pope, DRS-Signal Solutions

Khushpreet Kaur, North Carolina State University

DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/MITP.2005.37

A Captcha—a completely automatic public Turing test to tell computers and humans apart—is a test that humans can pass but computer programs cannot; such tests are becoming key to defending e-commerce systems. By using a Captcha, for example, IT systems can permit only real people—rather than a spammer's script—to create a free e-mail account. This article explains the various types of Captchas and discusses their strengths and weaknesses as a security measure. It also lists sources for more information on the formal research into Captchas.

Index Terms:

security, Captcha, Turing test, e-commerce, system administration, system management, spam, Gimpy, Bongo, Baffle Text, Pessimal Print, Pix.

Citation:

Clark Pope, Khushpreet Kaur, "Is It Human or Computer? Defending E-Commerce with Captchas," IT Professional, vol. 7, no. 2, pp. 43-49, Mar./Apr. 2005, doi:10.1109/MITP.2005.37

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