Digital currency bitcoin fell more than 15 percent on Monday to a nearly three-month low amid a slew of concerns ranging from a global regulatory clampdown to a ban on using credit cards to buy bitcoin by British and U.S. banks. On the Luxembourg-based Bitstamp exchange, bitcoin fell as low as $6,853.53 in early afternoon trading in New York. That marked a fall of more than half from a peak of almost $20,000 hit in December. Bitcoin has fallen in six of the last eight trading session. The currency, which surged more than 1,300 percent last year, has lost about half its value so far in 2018, as more governments and ... (full story)