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Brad Fitzpatrick

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CAPTCHA / HIP [Dec. 6th, 2003|10:19 pm]
Brad Fitzpatrick
Fun things to google for: CAPTCHA, HIP, BaffleText, Gimpy, EZ-Gimpy.

Spending a bit of time researching all this, working on LJ's human tests.

Good overview:

[User Picture]From: jamiemccarthy
2003-12-08 12:59 pm (UTC)

There's not much you can do

Any system you implement can be circumvented by trolls or spammers pretty easily. They just write the code to automatedly do whatever they want to do, and then when you present them with whatever human-only signon they need, they pipe it to a client. Some human does it, and returns the info to the robot which continues with the process.

If your captcha takes 2 seconds to complete, the spammer can hire some high school students to do 18,000 of them for $50.

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[User Picture]From: brad
2003-12-08 01:22 pm (UTC)

Re: There's not much you can do

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