Ethereum closed a big security hole with its energy-saving update

Ethereum, the world’s second-largest cryptocurrency, slashed its power use with a serious change to the way it works final 12 months. Safety specialists say the replace additionally unknowingly sidestepped a critical safety flaw that might have allowed hackers to steal funds. Nonetheless, a minimum of one cryptocurrency that “forked” from Ethereum by copying its code remains to be in danger.

Ethereum used to depend on “proof of labor” to safe its community, as bitcoin nonetheless does, which means that computer systems carried out large numbers of calculations to “mine” new foreign money and …