BTC Fetching...      ETH - Ethereum ETH Fetching...      BCH - Bitcoin Cash BCH Fetching...      LTC - Litecoin LTC Fetching...      XRP - Ripple XRP Fetching...      BNB - Binance Coin BNB Fetching...      EOS - EOS EOS Fetching...      XLM - Stellar XLM Fetching...      ADA - Cardano ADA Fetching...      TRX - TRON TRX Fetching...      BTC Fetching...      ETH - Ethereum ETH Fetching...      BCH - Bitcoin Cash BCH Fetching...      LTC - Litecoin LTC Fetching...      XRP - Ripple XRP Fetching...      BNB - Binance Coin BNB Fetching...      EOS - EOS EOS Fetching...      XLM - Stellar XLM Fetching...      ADA - Cardano ADA Fetching...      TRX - TRON TRX Fetching...      BTC Fetching...      ETH - Ethereum ETH Fetching...      BCH - Bitcoin Cash BCH Fetching...      LTC - Litecoin LTC Fetching...      XRP - Ripple XRP Fetching...      BNB - Binance Coin BNB Fetching...      EOS - EOS EOS Fetching...      XLM - Stellar XLM Fetching...      ADA - Cardano ADA Fetching...      TRX - TRON TRX Fetching...      BTC Fetching...      ETH - Ethereum ETH Fetching...      BCH - Bitcoin Cash BCH Fetching...      LTC - Litecoin LTC Fetching...      XRP - Ripple XRP Fetching...      BNB - Binance Coin BNB Fetching...      EOS - EOS EOS Fetching...      XLM - Stellar XLM Fetching...      ADA - Cardano ADA Fetching...      TRX - TRON TRX Fetching...      BTC Fetching...      ETH - Ethereum ETH Fetching...      BCH - Bitcoin Cash BCH Fetching...      LTC - Litecoin LTC Fetching...      XRP - Ripple XRP Fetching...      BNB - Binance Coin BNB Fetching...      EOS - EOS EOS Fetching...      XLM - Stellar XLM Fetching...      ADA - Cardano ADA Fetching...      TRX - TRON TRX Fetching...      BTC Fetching...      ETH - Ethereum ETH Fetching...      BCH - Bitcoin Cash BCH Fetching...      LTC - Litecoin LTC Fetching...      XRP - Ripple XRP Fetching...      BNB - Binance Coin BNB Fetching...      EOS - EOS EOS Fetching...      XLM - Stellar XLM Fetching...      ADA - Cardano ADA Fetching...      TRX - TRON TRX Fetching...      BTC Fetching...      ETH - Ethereum ETH Fetching...      BCH - Bitcoin Cash BCH Fetching...      LTC - Litecoin LTC Fetching...      XRP - Ripple XRP Fetching...      BNB - Binance Coin BNB Fetching...      EOS - EOS EOS Fetching...      XLM - Stellar XLM Fetching...      ADA - Cardano ADA Fetching...      TRX - TRON TRX Fetching...     

51% Attack

51% Attack is a situation where one single attacker has more than 50% of the total network processing power. In such case, the attacker could perform a double spend, amongst other things. Bitcoin (and most other cryptocurrencies) is designed with the belief that a single attacker will never have more than 50% of the total network processing power.