Hey! I'm David, cofounder of zkSecurity and the author of the Real-World Cryptography book. I was previously a crypto architect at O(1) Labs (working on the Mina cryptocurrency), before that I was the security lead for Diem (formerly Libra) at Novi (Facebook), and a security consultant for the Cryptography Services of NCC Group. This is my blog about cryptography and security and other related topics that I find interesting.

AI Startup Says It Has Defeated Captchas posted October 2013

This is pretty huge since it is the most trusted and the most used way to counter spams. http://www.technologyreview.com/news/520581/ai-startup-says-it-has-defeated-captchas/" target="_blank">More info here.

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