A New Anti-Spam Protocol Using CAPTCHA

Shirali-Shahreza, Sajad; Movaghar, Ali

doi:10.1109/icnsc.2007.372783

Cited by 27 publications

(7 citation statements)

References 21 publications

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“…CAPTCHA systems are usually used to prevent fake registration by computer programs in websites, but can be applied to other cases such as preventing sending of spams [8] and phishing attacks [9].…”

Section: Related Workmentioning

confidence: 99%

A New Human Interactive Proofs System for Deaf Persons

Shirali-Shahreza

2008

Fifth International Conference on Information Technology: New Generations (Itng 2008)

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Nowadays the Internet users are from different ages and groups. Disabled people are a group of the Internet users. Some websites are especially created for disabled people and public access to them is undesirable. In this paper, for the first time, a method is introduced for distinguishing between deaf persons and other users using a new HIP (Human Interactive Proofs) system. In this method, the sign language is used. A word is shown as a movie using a sign language. The user should recognize the word and select it from a list. Only deaf persons can understand sign language and recognize the word, therefore other persons and also computer programs cannot enter the website. This project has been implemented by PHP scripting language.

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Section: Related Workmentioning

confidence: 99%

A New Human Interactive Proofs System for Deaf Persons

Shirali-Shahreza

2008

Fifth International Conference on Information Technology: New Generations (Itng 2008)

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“…CAPTCHA systems are usually used to prevent fake registration by computer programs in websites but can be applied to other cases such as preventing sending of spams [7] and phishing attacks [8]. …”

Section: Related Workmentioning

confidence: 99%

Motion CAPTCHA

Shirali-Shahreza

2008

2008 Conference on Human System Interactions

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In some websites it is necessary to distinguish between human users and computer programs which is known as CAPTCHA (Completely Automated Public Turing test to tell Computers and Human Apart). CAPTCHA methods are mainly based on the weaknesses of OCR systems while using them are undesirable to human users. In this paper a new CAPTCHA method is introduced on the basis of showing a movie of a person's action. Then we ask the user to describe the movement of that person. The user should select the sentence which describes the motion from a list of sentences. If the user chooses the right sentence we can guess that the user is a human and not a computer program. The main advantage of this method is its simplicity and also the difficulty of computer attacks to it. This project has been implemented by PHP scripting language.

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“…Many anti-spam solutions [1,8] have been suggested based on a challenge-response protocol. A message sender needs to verify that they are a legitimate sender by answering the challenge message (e.g.…”

Section: Existing Solutionsmentioning

confidence: 99%

Hybrid spam filtering for mobile communication

Yoon

Kim

Huh

2010

Computers & Security

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Spam messages are an increasing threat to mobile communication. Several mitigation techniques have been proposed, including white and black listing, challenge-response and content-based filtering. However, none are perfect and it makes sense to use a combination rather than just one. We propose an anti-spam framework based on the hybrid of content-based filtering and challenge-response. There is the trade-offs between accuracy of anti-spam classifiers and the communication overhead. Experimental results show how, depending on the proportion of spam messages, different filtering parameters should be set.

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A New Anti-Spam Protocol Using CAPTCHA

Cited by 27 publications

References 21 publications

A New Human Interactive Proofs System for Deaf Persons

A New Human Interactive Proofs System for Deaf Persons

Motion CAPTCHA

Hybrid spam filtering for mobile communication

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