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Vendors & MarketEmerging1 sourceApr 20, 2026 · 18:00via Huntress Blog

Nightmare-Eclipse Tooling Seen in Real-World Intrusion

Brief

Huntress observed in-the-wild use of Nightmare-Eclipse tooling, including BlueHammer, RedSun, and UnDefend, in a live intrusion involving FortiGate VPN compromise as the initial access, reconnaissance commands, and likely tunneling activity.

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