Five reasons why cryptocurrencies are raising alarm Sylvan Lane © Getty Images Five reasons why cryptocurrencies are raising alarm Interest in cryptocurrencies has surged over the past year, and policymakers are scrambling to catch up. Investors have rushed into major digital currencies such as bitcoin and a growing industry of financial products tied to them, prompting regulators to lay out new rules for a rapidly growing world. Popular Searches Here are five reasons cryptocurrencies are spurring action from Washington: Soaring and volatile prices As stocks blasted to reco...