Tech May 12, 2026 6 min GhostLock PoC: 500K SMB files locked in 8 min via CreateFileW dwShareMode=0 CreateFileW dwShareMode=0 locks 500K SMB files in 8 min with no encryption. Detection key: NAS session exclusive handle counts, not write-based indicators. セキュリティ Windows ランサムウェア
