text:  A cybersecurity company, CrowdStrike, says the reason for the disruption appears to be a defect in its software update for users of Microsoft Windows. It said a fix had been deployed. A Russian court has convicted the US journalist Evan Gerskovich of spying and sentenced him to 16 years in a high-security penal colony. The trail has been dismissed as sham by US officials and his employer, The Wall Street Journal.