19 Jul
2005
19 Jul
'05
11:35 a.m.
Hi,
I have just integrated the LetterWarper from Jon Hylands in a command
for SmallWiki 2. It is used to prevent bots from modifying a wiki by
printing a string into an image. It just works perfectly. Thanks to
Jon.
This small command is available on SqueakSource under the name :
SW2LetterWarper.
Bye
--
Damien
19 Jul
19 Jul
2:56 p.m.
Sorry, can you describe with a concrete example what bots achieve by
printing a string into an image. Would that be a pre-existing image on the
wiki or a new one that the bot was trying to insert? Is the string
graffiti?
tia,
-Charles
On Tue, 19 Jul 2005 05:35:56 -0400, Damien Cassou <cassou(a)iam.unibe.ch>
wrote:
Hi,
I have just integrated the LetterWarper from Jon Hylands in a command
for SmallWiki 2. It is used to prevent bots from modifying a wiki by
printing a string into an image. It just works perfectly. Thanks to
Jon.
This small command is available on SqueakSource under the name :
SW2LetterWarper.
Bye
--
Charles A. Monteiro
3:12 p.m.
On Tue, Jul 19, 2005 at 08:56:06AM -0400, Charles A. Monteiro wrote:
Sorry, can you describe with a concrete example what
bots achieve by
printing a string into an image. Would that be a pre-existing image on the
wiki or a new one that the bot was trying to insert? Is the string
graffiti?
It is not something new, you might have seen this before. The website
display an image, and a form. The user has to look the image and write
in the form what is drawn in the image. Since bots has problems to
read images, they can't enter the website.
Here is an example :
Go to http://www.paypal.com/
Click on the image 'Sign Up Now' then the button 'Continue'
Then, on the very bottom, you see an image with letters and digits on
it. To sign a new account, you have to write in the text box what is
written on the image.
This is what SW2LetterWarper is about
--
Damien
5:04 p.m.
ah, yes, now I understand, thanks
On Tue, 19 Jul 2005 09:12:55 -0400, Damien Cassou <cassou(a)iam.unibe.ch>
wrote:
On Tue, Jul 19, 2005 at 08:56:06AM -0400, Charles A.
Monteiro wrote:
--
Charles A. Monteiro
Sorry, can you describe with a concrete example
what bots achieve by
printing a string into an image. Would that be a pre-existing image on
the
wiki or a new one that the bot was trying to insert? Is the string
graffiti?
It is not something new, you might have seen this before. The website
display an image, and a form. The user has to look the image and write
in the form what is drawn in the image. Since bots has problems to
read images, they can't enter the website.
Here is an example :
Go to http://www.paypal.com/
Click on the image 'Sign Up Now' then the button 'Continue'
Then, on the very bottom, you see an image with letters and digits on
it. To sign a new account, you have to write in the text box what is
written on the image.
This is what SW2LetterWarper is about
5:45 p.m.
FWIW, I believe these are called Captchas (completely automated public
Turing test to tell computers and humans apart).
See:
http://en.wikipedia.org/wiki/Captcha
Ian.
On Jul 19, 2005, at 17:04, Charles A. Monteiro wrote:
ah, yes, now I understand, thanks
On Tue, 19 Jul 2005 09:12:55 -0400, Damien Cassou
<cassou(a)iam.unibe.ch> wrote:
--
ian prince - inextenso - 1 ruelle des moulins - 1260 nyon - switzerland
ian(a)inextenso.com - tel +41 22 990 10 80 - mobile +41 78 880 27 02
On Tue, Jul 19, 2005 at 08:56:06AM -0400, Charles
A. Monteiro wrote:
--
Charles A. Monteiro
Sorry, can you describe with a concrete example
what bots achieve by
printing a string into an image. Would that be a pre-existing image
on the
wiki or a new one that the bot was trying to insert? Is the string
graffiti?
It is not something new, you might have seen this before. The website
display an image, and a form. The user has to look the image and write
in the form what is drawn in the image. Since bots has problems to
read images, they can't enter the website.
Here is an example :
Go to http://www.paypal.com/
Click on the image 'Sign Up Now' then the button 'Continue'
Then, on the very bottom, you see an image with letters and digits on
it. To sign a new account, you have to write in the text box what is
written on the image.
This is what SW2LetterWarper is about
6862
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6862
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4 comments
3 participants
participants (3)
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Charles A. Monteiro -
Damien Cassou -
Ian Prince