The daily business briefing: June 28, 2017

Another massive ransomware attack causes global disruptions, Yellen sees no new financial meltdown "in our lifetimes," and more

A massive cyberattack spreads
(Image credit: ROB ENGELAAR/AFP/Getty Images)

1. Massive cyberattack causes global disruptions

Hackers struck Europe, South Asia, and the U.S. with a powerful cyberattack on Tuesday, using highly virulent "Petya" malicious data-scrambling ransomware to disrupt companies' and governments' computer systems. Tens of thousands of computers were affected. Ukraine was hit particularly hard. Officials in Ukraine said the attack affected the power grid and government offices, although the country's prime minister said "vital systems" weren't affected. Russia's Rosneft oil company and Danish shipping giant A.P. Moller-Maersk said they narrowly escaped major damage. As with the WannaCry attacks in May, the hackers took over computers, apparently using a program from the National Security Agency, and demanded digital ransom in exchange for returning control. It was not immediately clear who was behind the latest attack.

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Harold Maass, The Week US

Harold Maass is a contributing editor at The Week. He has been writing for The Week since the 2001 debut of the U.S. print edition and served as editor of TheWeek.com when it launched in 2008. Harold started his career as a newspaper reporter in South Florida and Haiti. He has previously worked for a variety of news outlets, including The Miami Herald, ABC News and Fox News, and for several years wrote a daily roundup of financial news for The Week and Yahoo Finance.