Buffett's comments come a day after JPMorgan & Chase Chief Executive Jamie Dimon said he regrets calling bitcoin a fraud.
There have been public complaints that Israeli banks were making it difficult for some customers to transfer money from their accounts to buy bitcoin.
Décryptage de l’engouement généralisé pour le bitcoin
These days, newspapers and websites are full of stories about cryptocurrencies, virtual currencies, and bitcoins. Confused? Here is a ‘guide for the perplexed.'
Bitcoin plunged by 30 percent to below $12,000 on Friday as investors dumped the cryptocurrency after its sharp rise to nearly $20,000.
Many police forces and armies aren't ready for the technological and mental leap necessary.