add prerequisite section and captcha farms info
This commit is contained in:
parent
4cf1872d9b
commit
2b342d2de4
|
@ -8,7 +8,10 @@ Good\\
|
||||||
The method relies on Optical Character Recognition (OCR) capabilities of human
|
The method relies on Optical Character Recognition (OCR) capabilities of human
|
||||||
users. OCR technology is becoming increasingly sophisticated which would render
|
users. OCR technology is becoming increasingly sophisticated which would render
|
||||||
this method ineffective in the future.
|
this method ineffective in the future.
|
||||||
Object Recognition Technology is becoming
|
|
||||||
|
Without OCR, this method can be bypassed using human-powered CAPTCHA farms with
|
||||||
|
% TODO cite CAPTCHA farm cost analysis paper
|
||||||
|
ease. On an average, farms generate one CAPTCHA solution every 40 seconds
|
||||||
\subsubsection{Accessibility}
|
\subsubsection{Accessibility}
|
||||||
\subsubsection{Accuracy}
|
\subsubsection{Accuracy}
|
||||||
\subsubsection{Privacy}
|
\subsubsection{Privacy}
|
||||||
|
|
|
@ -10,6 +10,7 @@
|
||||||
\maketitle
|
\maketitle
|
||||||
|
|
||||||
\input{intro/intro.tex}
|
\input{intro/intro.tex}
|
||||||
|
\input{pre-req/main.tex}
|
||||||
\input{analysis/main.tex}
|
\input{analysis/main.tex}
|
||||||
|
|
||||||
\end{document}
|
\end{document}
|
||||||
|
|
12
pre-req/captcha-farms.tex
Normal file
12
pre-req/captcha-farms.tex
Normal file
|
@ -0,0 +1,12 @@
|
||||||
|
\subsection{CAPTCHA farms}
|
||||||
|
CAPTCHA farms are run using cheap labor available in third-world countries. When
|
||||||
|
an attacker seeks the services of a CAPTCHA farm, they are provided access to an
|
||||||
|
web API to forward CAPTCHA challenges. A labourer working in the farm solves the
|
||||||
|
CAPTCHA and the API responds with the solution. The whole process takes less
|
||||||
|
then a minute to complete and costs only a fraction of what premium services
|
||||||
|
like reCAPTCHA charge.
|
||||||
|
|
||||||
|
Overall, this attack is very feasible and cheap and is frequently used to bypass
|
||||||
|
traditional CAPTCHA systems.
|
||||||
|
|
||||||
|
%% TODO insert price charts
|
3
pre-req/main.tex
Normal file
3
pre-req/main.tex
Normal file
|
@ -0,0 +1,3 @@
|
||||||
|
\section{Prerequisite}
|
||||||
|
|
||||||
|
\input{pre-req/captcha-farms.tex}
|
Loading…
Reference in a new issue