cyberespionage
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MuddyWater hackers targeted South Korean electronics maker in broad espionage campaign
MuddyWater targeted at least nine organizations in a cyberespionage campaign that included a major South Korean electronics maker, government agencies and an airport, according to Symantec. The group used DLL sideloading, PowerShell and other legitimate tools.
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Silver Fox uses fake Microsoft Teams installers in false-flag ValleyRAT campaign
Security researchers report that the Silver Fox group has run an SEO poisoning campaign since November 2025 that uses fake Microsoft Teams installers to deliver ValleyRAT to organisations in China; technical analysis from ReliaQuest and Nextron Systems details layered infection chains, false-flag indicators and the use of vulnerable drivers.
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Iran-linked MuddyWater group deploys MuddyViper backdoor against Israeli targets
Researchers say Iranian-linked MuddyWater has used a new MuddyViper backdoor, delivered via a Fooder loader, to target Israeli organisations across multiple sectors and to harvest credentials and browser data.
