A UK power plant was knocked offline by a cyberattack and remained out of production for four days. Officials, citing security, declined to name the facility but said it is relatively small and the outage did not affect UK-wide electricity supply or energy production; staff worked to restore operations. The incident coincided with last month’s series of attacks on US water infrastructure that affected 12 states and drew White House attention. The UK government has briefed power-company CEOs and

A UK power plant was knocked offline by a cyberattack and remained out of production for four days. Officials, citing security, declined to name the facility but said it is relatively small and the outage did not affect UK-wide electricity supply or energy production; staff worked to restore operations. The incident coincided with last month’s series of attacks on US water infrastructure that affected 12 states and drew White House attention. The UK government has briefed power-company CEOs and sent letters with advice, guidance and next steps to firms.