Making defeating CAPTCHAs harder for bots. / Al-Fannah, Nasser Mohammed.

2018. 1-8.

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Making defeating CAPTCHAs harder for bots. / Al-Fannah, Nasser Mohammed.

2018. 1-8.

Research output: Contribution to conferencePaperpeer-review

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@conference{ac30efe99e0b4b82bbe634c3959f948f,
title = "Making defeating CAPTCHAs harder for bots",
abstract = "For a number of years, many websites have used CAPTCHAs to filter out interactions by bots. However, attackers have found ways to circumvent CAPTCHAs by programming bots to solve or bypass them, or even relay them for humans to solve. In order to reduce the chances of success of such attacks, CAPTCHAs can be strengthened by the addition of certain safeguards. In this paper, we discuss seven existing safeguards as well as five novel safeguards designed to make circumventing CAPTCHAs harder. These safeguards are not mutually exclusive and can add multiple layers of protection to a CAPTCHA. We further provide a high-level comparison of their effectiveness in addressing the threat posed by CAPTCHA-defeating techniques. In order to focus on safeguards that are usable, we restrict our attention to those which have minimal adverse effect on the user experience.",
author = "Al-Fannah, {Nasser Mohammed}",
year = "2018",
month = jan,
day = "11",
doi = "10.1109/SAI.2017.8252183",
language = "English",
pages = "1--8",

}

RIS

TY - CONF

T1 - Making defeating CAPTCHAs harder for bots

AU - Al-Fannah, Nasser Mohammed

PY - 2018/1/11

Y1 - 2018/1/11

N2 - For a number of years, many websites have used CAPTCHAs to filter out interactions by bots. However, attackers have found ways to circumvent CAPTCHAs by programming bots to solve or bypass them, or even relay them for humans to solve. In order to reduce the chances of success of such attacks, CAPTCHAs can be strengthened by the addition of certain safeguards. In this paper, we discuss seven existing safeguards as well as five novel safeguards designed to make circumventing CAPTCHAs harder. These safeguards are not mutually exclusive and can add multiple layers of protection to a CAPTCHA. We further provide a high-level comparison of their effectiveness in addressing the threat posed by CAPTCHA-defeating techniques. In order to focus on safeguards that are usable, we restrict our attention to those which have minimal adverse effect on the user experience.

AB - For a number of years, many websites have used CAPTCHAs to filter out interactions by bots. However, attackers have found ways to circumvent CAPTCHAs by programming bots to solve or bypass them, or even relay them for humans to solve. In order to reduce the chances of success of such attacks, CAPTCHAs can be strengthened by the addition of certain safeguards. In this paper, we discuss seven existing safeguards as well as five novel safeguards designed to make circumventing CAPTCHAs harder. These safeguards are not mutually exclusive and can add multiple layers of protection to a CAPTCHA. We further provide a high-level comparison of their effectiveness in addressing the threat posed by CAPTCHA-defeating techniques. In order to focus on safeguards that are usable, we restrict our attention to those which have minimal adverse effect on the user experience.

U2 - 10.1109/SAI.2017.8252183

DO - 10.1109/SAI.2017.8252183

M3 - Paper

SP - 1

EP - 8

ER -