Facebook's proposed Libra digital currency “could be misused by money launderers and terrorist financiers," the treasury secretary says.
Japanese cryptocurrency exchange Bitpoint said that $23 million of the stolen funds belonged to customers, while it owned the rest.
The project would bring a consumer-friendly version of digital currencies to smartphones around the world.
The Basel Committee on Banking Supervision said cryptocurrencies pose a litany of risks for banks, and any material holdings need to be publicly disclosed.
The lofty promises of instant riches through crypto have fallen short, but the market will be better as it works through an evolutionary stage.
The SEC's move highlights its "strict stance against letting ETFs tracking bitcoin and other cryptocurrencies come to market."
Backers of the first-ever bitcoin-related ETF have not been able to assuage SEC concerns over bitcoin fraud and price manipulation.
The Bank for International Settlements says the "decentralized technology of cryptocurrencies is a poor substitute" for money backed by central banks.
Twitter CEO Jack Dorsey, who founded the company, said he was a "huge fan" of bitcoin but the move was contentious internally.
The money transfer giant is partnering with XRP owner Ripple, which is betting digital currency will be used as a form of bridge funding.
Firms are providing a 'bridge to liquidity' for investors and businesses by originating loans secured by the cryptocurrency.
The 50 employees at the Securities and Exchange Commission’s office of the chief accountant try to keep up with technology changes like bitcoin.
