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Kyber ransomware gang toys with post-quantum encryption on Windows

📅 28 April 2026 at 09:36 UTC📰 Bleeping ComputerView original source ↗
Kyber ransomware gang toys with post-quantum encryption on Windows

A new Kyber ransomware operation is targeting Windows systems and VMware ESXi endpoints in recent attacks, with one variant implementing Kyber1024 post-quantum encryption. [...]

🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview

The Kyber ransomware gang has launched a new operation targeting Windows systems and VMware ESXi endpoints, utilizing post-quantum encryption in some variants.

⚙️Technical Details
Affected Systems
Windows systemsVMware ESXi endpoints
Attack Vectors
Tor-based ransom infrastructureenumeration of virtual machines on the infrastructure
💥Impact Assessment
Severity: critical
🛡️Recommended Actions
1Implement robust backup and recovery procedures
2Regularly update and patch operating systems and software
3Monitor network activity for suspicious Tor-based traffic
📦Affected Products
Windows Systems:Windows file serversVmware Esxi Endpoints:datastore files

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