Ukraine official says version of WannaCry virus caused cyberattacks

KIEV (Reuters) - An adviser to Ukraine's interior minister said a version of the "WannaCry" ransomware had caused outages on government websites and those of several companies, a cyberattack he called the worst in Ukraine's history.

Adviser Anton Gerashchenko said Ukrainian IT systems had been targeted with "Cryptolocker" a version of WannaCry, the virus that locked up more than 200,000 computers in more than 150 countries in May.