My experience disclosing a critical Bitcoin Cash vulnerability

On April 25, 2018, I anonymously and privately disclosed a critical vulnerability in Bitcoin Cash, one of the world’s most valuable cryptocurrencies — not to be confused with Bitcoin. A successful exploit of this vulnerability could have been so disruptive that transacting Bitcoin Cash safely would no longer be possible, completely undermining the utility (and thus the value) of the currency itself. Instead, the vulnerability was fixed without incident, and publicly disclosed on May 7, 2018.

A quick clarification: Bitcoin Cash is a cryptocurrency that is distinct from and incompatible with Bitcoin. It is named as such because it is…

Cory Fields

Bitcoin Core developer for the Digital Currency Initiative at the MIT Media Lab

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