Is digital money really the future? Cryptocurrency is in the spotlight after a record theft. At the same time, US president Donald Trump has announced a crypto reserve fund.
North Korea takes £1bn in crypto heist
Crypto warning: Experts believe the heist could be part of a broader strategy by North Korea to generate revenue from cybercrime. Glossary
Cryptocurrency - A digital currency in which transactions are verified and records maintained by a decentralised system using cryptography, rather than by a centralised authority.
North Korea - A country formed in 1945 when Japanese-occupied Korea was split between a Communist government in the north and a capitalist one in the south. Today it is extremely reclusive, and hostile to the West.
Unrecoverable Funds - Money that you will never get back.
Dark Economy - Economic activities that are illegal or operate outside official government regulation and record-keeping.
Bitcoin - A virtual currency that is "mined" using computers. Bitcoin was inspired by the idea that currencies' value should not be controlled by central banks. In truth, however, its value has fluctuated much more wildly than that of most centralised currencies.
El Salvador - A country in Central America. It suffered a terrible civil war from 1979 until 1992.
IMF - The international Monetary Fund. Its main function has been to manage debt difficulties in many countries, often enforcing strict financial discipline in exchange for loans to governments.