Henry Kenyon

Privacy ‘poisoning’ poses threat to companies using blockchain
Public blockchains face a one-two punch, with data privacy laws another factor

A new type of cyberattack that can render blockchain technology unusable may become a major headache for organizations that depend on it.

Known as privacy “poisoning,” the attack involves loading private data, such as names, addresses and credit card numbers, or illegal material, such as child pornography, into a blockchain, therefore putting the network in conflict with local laws. The result is that the affected chain with all of its contained data cannot be used unless expensive and time-consuming steps are taken.