Key Fountain Attack ( Heap-based Buffer Overflow ) The attacker prepares input data—specially formed fragments for the libbitcoin library’s splice or build_chunk functions—that exceed the allocated buffer size. For example, the transmitted data array is significantly larger than the input argument sizes would suggest. This extremely long “shuttle sequence” passes through the vulnerable std::copy without encountering any … Continue reading Key Fountain Attack: Turning a Buffer Overflow into a Tool for BTC Theft and Private Key Recovery in the Bitcoin Ecosystem, where an Attacker Gains the Ability to Extract or Replace Bitcoin Wallet Secrets