While it is not immediately clear who was behind cyberattacks on Ukraine, they come amid heightened tensions with Russia and after talks between Moscow and the West failed to yield any significant progress.
KYIV, Ukraine Hackers on Friday temporarily shut down dozens of Ukrainian government websites, causing no major damage but adding to simmering tensions while Russia amasses troops on the Ukrainian border. Separately, in a rare gesture to the U.S. at a time of chilly relations, Russia said it had arrested members of a major ransomware gang that targeted U.S. entities.