> On 20-07-16 17:05, [email protected] wrote: >> Google research declares the simple text captcha dead. They remain >> difficult for human beings, but machine learning can crack them 99.9% of >> the time. > > While probably true, no captcha abuse on WoT has been documented so far. > >> I propose a better captcha for WOT that works like: > > Thank you for considering how WoT can be improved. Your proposal is not > immediately clear to me; I'll fire some questions and state some of my > doubts to get a better understanding. > >> - The challenge to be solved: Add the numbers presented in the puzzle >> series that ONLY show trees. > > I don't see what benefit having to add numbers brings over recognizing > characters. Digits are easier to recognize for computers (for there are > only 10 of them, compared to our 26 character alphabet), and addition is > a trivial task for computers as well. > >> - It presents 5-10 puzzles. The legit puzzles randomly sprinkled >> throughout. > > What do you mean by randomly sprinkled legit puzzles? All puzzles in WoT > are supposed to be legit. What purpose would a non-legit puzzle have? Or > do you envision a series of multiple "puzzles" within a single > captcha-like image? > >> - What puzzles look like: A number is drawn across an image backdrop of >> trees and other objects. >> >> >> That should raise the bar and not be hard to switch to. > > In my humble opinion, this statement is far from the truth. > > Consider a finite set of "tree" and "non-tree" images that is to be > shipped with WoT. This reduces your proposal to a captcha with an > alphabet extended to the cardinality of the set of images, however > operating on image similarity (and known classification information on > whether the image is a tree or not) instead of character similarity. > > The strength of captcha alternatives that are based on identification of > image contents, relies on the assumption that the image set (in other > words, the classification data) is kept private. This cannot be done for > WoT (the attacker could always download the source after all!), unless > each user would have to supply their own source of captcha images â > which would make setup unnecessarily hard. > > Kind regards, > Bert > > _______________________________________________ > Devl mailing list > [email protected] > https://emu.freenetproject.org/cgi-bin/mailman/listinfo/devl
I got nothin' :) The idea was poorly thought out. Thanks for your time _______________________________________________ Devl mailing list [email protected] https://emu.freenetproject.org/cgi-bin/mailman/listinfo/devl
