kyber
RansomwareAbout the group
Kyber is a recently identified ransomware group using sophisticated hybrid encryption (AES-256-CTR with X25519 and Kyber1024), operating Tor-based communication channels and employing double-extortion with free partial decryption offered to build negotiation trust, discovered through underground forum monitoring in 2025.
Exploited vulnerabilities
No CVEs attributed to this group in public sources (MITRE ATT&CK). Absence of attribution does not mean absence of activity.
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