Captchas Are About To Get A WHOLE LOT HARDER for bots.

UnripeArbiter

UnripeArbiter

Extreme Skeptic.
Dec 21, 2006
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New Scientst Tech, Nov 3, 2009

Captchas, the scrambled images used to separate humans from software bots online, could become harder for bots to solve and easier for humans to handle by animating them, says computer scientist Niloy Mitra at the Indian Institute of Technology Delhi, who along with colleagues has devised a system that should separate the bots from the humans.

LINK HAS VIDEO - This is sure to set back bot programmers for who knows how long.
Animated ink-blot images keep unwanted bots at bay
 


kineticbug said:
Not really feasible yet, as the objects are too ambiguous.
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Not totally sure what you mean by that.

From the article: "Tests with 310 volunteers showed that 98 percent could recognize over 80 percent of the emerging images at the easy setting, taking 6.4 seconds on average to do so." It's not too ambiguous at all.... Unless you're in that 2%....
 
But what were their responses? "Running, Man, Male, Person, Figure"?
Seems like there'd be enough room for error that bots could just guess at it and get it right enough of the time.
 
kineticbug said:
Edit: that and it'd still be just as easy to get an Indian to solve it for 0.002 cents ;x
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Now that's what I was thinking! This is the true power of this technology.... If you know what I mean. :338:

Now we really need those Indian human captcha solvers at least until the Indian bot programmers catch up to the Indian captcha makers. :crap:

kineticbug said:
But what were their responses? "Running, Man, Male, Person, Figure"?
Seems like there'd be enough room for error that bots could just guess at it and get it right enough of the time.
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Now that's true, but the problem isn't that they're ambiguous just that the database is too small.
 
papajohn56 said:
I'll give the XRumer crew 2-3 months at most.
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No doubt someone will eventually crack it.

I wish the best of luck to all the crackers out there solely because when you can make a computer recognize these patterns then wow.... you have just created something powerful.

Can you imagine the applications for that kind of pattern recognition power in the real world?
 
papajohn56 said:
I'll give the XRumer crew 2-3 months at most.
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more like 2-3 hours.

it's innovative for sure, but any well-trained convolutional neural network will have no problems with it.
hell, even a poorly trained one with off-the-shelf software had no problem:

cnn1.jpg


cnn2.jpg



samples were horses, trucks, motorcycles, joggers, and fish -- all with less than 10 training images per category.
no doubt could get 80%+ certainty, if not higher, with more time/images fed into it.

high-accuracy cracking of these captchas is pretty much simple as capturing a few frames from the animation for the test set and running that against (named, for output) trained sets.

always fun to see new captcha approaches though.
one of the better (read: no boot on neck) ways to fuel the AI arms race.
 
Deliguy will figure it out in like 30 seconds and then write a script to solve them in like 30 seconds. Deliguy, dullspace and circa are my heroes.
 
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Talk about fucking overkill. Not to mention the lawsuits from epileptic users.

Does it really take "scientists" and "studies" to come up with this kind of stuff.

How about the ajax based system where you drag and drop the requested pictures into a circle? Check it out here Ajax Fancy Captcha - jQuery plugin - WebDesignBeach.com

Seriously I have a hard enough time as it is to figure out some of these damn things and now I have to stare at scrambly galloping horses to post a damn comment comon
"scientists" you can do better than this....

**edit** - I know the ajax system isn't 100% plausible because of the javascript requirement. Which brings up another question.... how the fuck is a blind person supposed to see a god damn scrambly white horse running in circles anyways???
 
backlinkgurus said:
Talk about fucking overkill. Not to mention the lawsuits from epileptic users.

Does it really take "scientists" and "studies" to come up with this kind of stuff.

How about the ajax based system where you drag and drop the requested pictures into a circle? Check it out here Ajax Fancy Captcha - jQuery plugin - WebDesignBeach.com

Seriously I have a hard enough time as it is to figure out some of these damn things and now I have to stare at scrambly galloping horses to post a damn comment comon
"scientists" you can do better than this....

**edit** - I know the ajax system isn't 100% plausible because of the javascript requirement. Which brings up another question.... how the fuck is a blind person supposed to see a god damn scrambly white horse running in circles anyways???
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LOL.

The AJAX drag and drop is so fucking easy to break it's not even funny, move along.
 
backlinkgurus said:
Of course. Simply saying this is more of the direction they need to take. Usability is just as important a factor as defeating the spammers. You can
t cater 100% to one side or the other. It's got to be both.
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That I can agree on, accessibility needs to be universal.
Captchas pretty much ruin that at the moment, they're just a band aid until they implement real spam filters and detection (RE: never).
 
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