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.
I found a pretty nice explanation of Heartbleed for the layman in this XKCD comic. Heartbleed is a recent and alarming vulnerability found in the OpenSSL toolkit that serves most of the application/websites today. To quote Schneier:
"Catastrophic" is the right word. On the scale of 1 to 10, this is an 11.
Here's the comic:
And if you want to dig a bit more into it, you can read some more explanations on security.stackexchange.
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My book Real-World Cryptography is finished and shipping! You can purchase it here.
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