China-linked FamousSparrow hackers used Microsoft Exchange to breach energy firm

China-linked FamousSparrow hackers targeted an Azerbaijani oil and gas company in a multi-wave espionage campaign that lasted from late December 2025 to late February 2026. Bitdefender researchers said the attackers repeatedly returned through the same vulnerable Microsoft Exchange Server and deployed different malware families across three waves. The operation used Deed RAT, an attempted Terndoor […] The post China-linked FamousSparrow hackers used Microsoft Exchange to breach energy firm appeared first on VPN Central.