Completely Automated Public Turing test to tell Computers and Humans Apart

E1019450

Completely Automated Public Turing test to tell Computers and Humans Apart is a type of challenge–response test used on websites to distinguish human users from automated bots.

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Statements (49)

Predicate Object
instanceOf challenge–response test
reverse Turing test
web security mechanism
abbreviation CAPTCHA
basedOn problems that are easy for humans but hard for computers
challengeMedium audio
image
interactive widget
text
counteredBy machine learning-based image recognition
optical character recognition
criticizedFor accessibility issues for visually impaired users
being breakable by advanced machine learning
usability problems
designedBy John Langford
Luis von Ahn
Manuel Blum
Nicholas J. Hopper
developedAt Carnegie Mellon University
linked to: CMU
evolvedInto invisible CAPTCHA systems
risk-based CAPTCHA systems
example click a checkbox labeled "I am not a robot"
distorted text recognition test
select all images containing a specific object
hasProperty automated evaluation
designed to be difficult for bots
designed to be solvable by humans
machine-graded
publicly accessible
hasType audio CAPTCHA
behavioral CAPTCHA
linked to: CAPTCHA

checkbox CAPTCHA
game-based CAPTCHA
image-based CAPTCHA
math CAPTCHA
slider CAPTCHA
text-based CAPTCHA
linked to: CAPTCHA
introducedIn early 2000s
purpose distinguish human users from automated bots
relatedTo Turing test
securityRole access control
bot mitigation
fraud prevention
usedFor prevent automated abuse of online services
prevent automated account creation
prevent credential stuffing attacks
prevent spam
rate limiting automated requests
usedOn websites

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Referenced by (2)

Full triples — surface form annotated when it differs from this entity's canonical label.

CAPTCHA fullForm Completely Automated Public Turing test to tell Computers and Humans Apart
CAPTCHA abbreviationFor Completely Automated Public Turing test to tell Computers and Humans Apart