Cryptocurrency may have come to stay, yet financial regulators cannot leave it alone.

The controversial digital currency has come under serious scrunity by financial regulators across the world as its popularity continues to grow.

On Monday, banks in Britain and the United States of America announced ban on the use of credit cards to buy Bitcoin and other “crypto currencies”.

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The banks’ fear is that a plunge in the value of the digital currencies will leave customers unable to repay their debts.

Britain’s biggest bank, Lloyds Banking Group said on Monday that it would ban its credit card customers from buying crypto currencies, following the lead of U.S. banking giants JP Morgan Chase & Co and Citigroup.

The move is aimed at protecting customers from running up huge debts from buying virtual currencies on credit, if their values were to plummet, a Lloyds spokeswoman said.

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Concerns have arisen among credit card providers because their customers have increasingly been using credit cards to fund accounts on online exchanges, which are then used to purchase the digital currencies.

Last week Mastercard, the world’s second biggest payments network, said customers buying crypto currencies with credit cards fueled one percentage point increase in overseas transaction volumes in the fourth quarter of 2017 when Bitcoin saw a bubble.

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