https://www.reuters.com/article/us-toshiba-cyber/toshibas-european-business-hit-by-cyberattack-source-idUSKBN2CV0AV >TOKYO (Reuters) -Toshiba Corp's European business has been hit by a cyberattack, a source familiar with the situation said on Friday, with public broadcaster NHK identifying the perpetrators as DarkSide, the group the U.S. FBI blamed for the Colonial Pipeline attack.