Much of the mining of the Monero privacycoin is done by a single mining pool named MineXMR. The total computing power being used to mine and process Monero transactions (also called the hashrate) controlled by the one mining pool has been gradually increasing. On February 13, someone posted in the Monero subreddit urging people to “boycott” MineXMR, because the pool’s hashrate was as high as 47.7% of the total network hashrate. If the one group’s hashrate breaks the 50% mark, it opens the network up to a potential 51% attack, where the mining pool could be used for malicious actions, including blocking new transactions from being confirmed, reordering transactions, or double spending.