Russian hackers abuse hotel Wi-Fi networks to steal Microsoft 365 credentials and deploy malware

Aug 04, 2026 - 13:00
Russian hackers abuse hotel Wi-Fi networks to steal Microsoft 365 credentials and deploy malware

Midnight Blizzard, the Russian threat actor tied to the country’s foreign intelligence service, has spent months targeting users of public Wi-Fi networks at places like hotels and conference centers, according to new findings from Microsoft Threat Intelligence. Overview of the CaptiveCrunch attack flow (Source: Microsoft) Microsoft named the campaign CaptiveCrunch and identified two malware strains behind it, CornFlake and ChocoShell. Building on earlier research from security firm ReliaQuest, published July 23, Microsoft ties this activity … More

The post Russian hackers abuse hotel Wi-Fi networks to steal Microsoft 365 credentials and deploy malware appeared first on Help Net Security.