The volatile swings of cryptocurrencies

BAD NEWS: Banks in the European Union should refrain from offering customer accounts in virtual currencies like Bitcoins until regulatory safeguards are in place, the bloc's banking watchdog said on Friday. — Reuters

LAST month, WannaCry ransomware created havoc in many markets to the extent of crippling hospitals in Britain and Spain.

The ransom money demanded by hackers then was cryptocurrencies.