A Russian court on Wednesday convicted Ilya Sachkov, a top cyber security executive, of treason and jailed him for 14 years, the state news agency TASS reported.
TASS had previously said that the case centered on allegations that Sachkov had passed classified information to foreign spies.
Sachkov, who denied wrongdoing, helped found Group-IB, once one of Russia's most prominent cybersecurity firms which announced earlier this year it had cut ties with its original market.