05 Jul '15, 5pm

Bitcoin: Outdated software creating invalid cryptocurrency - Network World

Bitcoin: Outdated software creating invalid cryptocurrency - Network World

Running out-of-date software is risky if you value security, but running outdated bitcoin software can create invalid currency; many bitcoin wallets using outdated software are “currently vulnerable to double-spending of confirmed transactions,” a bitcoin warning states. “Almost all software (besides Bitcoin Core 0.9.5 and later) will accept these invalid blocks under certain conditions.” Bitcoin.org warned that some bitcoin miners are using outdated software which just assumes the blocks are valid instead of checking them. “All software that assumes blocks are valid (because invalid blocks cost miners money) is at risk of showing transactions as confirmed when they really aren't. This particularly affects lightweight (SPV) wallets and software such as old versions of Bitcoin Core which have been downgraded to SPV-level security by the new BIP66 consensus rules.” The warni...

Full article: http://www.networkworld.com/article/2943966/microsoft-sub...

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