Advances in image recognition show certain classes of captcha solvers to be vulnerable to Langford inputs. Antispam quickly weaponizes this.
http://www.infinityplus.co.uk/stories/blit.htm … (I'll probably write a long form version, the arc does not fit satisfactorily into three tweets)
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Cool link, thanks!
Thanks. Twitter will use this to make your timeline better. UndoUndo
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