Ethereum's Vitalik Buterin Gives Shocking Blockchain Warning
Vitalik Buterin, Ethereum's co-founder, has issued a warning regarding the blockchain's security.
Buterin stated that Ethereum's cryptographic security ends when users rely on validators for off-chain tasks, as
the blockchain's cryptographic guarantees stop where external trust begins.
On October 26, Buterin explained that even a 51% attack cannot validate an invalid block, as each node independently verifies new blocks and rejects any that break the protocol's rules.
- This decentralized verification protects Ethereum from false ledger entries, even under majority control.
- Validators cannot seize users' funds or forge transactions, even if they collude or experience a software bug.
Buterin emphasized that this security guarantee only applies to the blockchain's protocol.
Author's summary: Buterin warns of Ethereum's security limitations.
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