Simon Willison’s Weblog

Colm MacCárthaigh tells the inside story of how AWS responded to Heartbleed. The Heartbleed SSL vulnerability came out five years ago. In this Twitter thread Colm, who was Amazon’s principal engineer for Elastic Load Balancer at the time, describes how the AWS team responded to something that “was scarier than any bug I’d ever seen”. It’s a cracking story.

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