An anonymous reader writes "According to the article, someone has taken 15% of the Bitcoin hashing power and is currently filling it with empty blocks. The article says that this might be an attack against bitcoin.
"He is willing to spend money to mine these empty blocks. Essentially, this can lead to a stop in bitcoin transaction processing. Some people who would do this could include governments, banks, competing currencies, or ridiculously wealthy and bored persons who have a vendetta against bitcoin. If this entity obtains 51% of hashing power and fully stops processing transactions while mining against only its own blocks, the block chain will become useless.""
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