Microsoft says dozens of computer systems at an unspecified number of Ukrainian government agencies have been infected with destructive malware disguised as ransomware.
Separately, a top private sector cybersecurity executive in Kyiv told The Associated Press how the attack succeeded: The intruders penetrated the government networks through a shared software supplier in a so-called supply-chain attack in the fashion of the 2020 SolarWinds Russian cyberespionage campaign targeting the U.S. government.
Microsoft said the malware “executes when an associated device is powered down,” a typical initial reaction to a ransomware attack. Tensions with Russia have been running high in recent weeks after Moscow amassed an estimated 100,000 troops near Ukraine’s border. Experts say they expect any invasion would have a cyber component, which is integral to modern “hybrid” warfare.
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