How Secure Is Blockchain Really?

It turns out “secure” is a funny word to pin down

MIT Technology Review
Apr 25, 2018 · 5 min read
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Photo: DragonImages/Getty Images

By Mike Orcutt

The whole point of using a blockchain is to let people — in particular, people who don’t trust one another — share valuable data in a secure, tamperproof way. That’s because blockchains store data using sophisticated math and innovative software rules that are extremely difficult for…

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