david wong

Hey! I'm David, a security engineer at the Blockchain team of Facebook, previously a security consultant for the Cryptography Services of NCC Group. I'm also the author of the Real World Cryptography book. This is my blog about cryptography and security and other related topics that I find interesting.

How Heartbleed works thanks to XKCD posted April 2014

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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