FBI publishes First VPN Service indicators and defensive guidance

Event Details

The FBI issued FLASH-20260521-001 describing First VPN Service infrastructure used by at least 25 ransomware groups. The advisory publishes indicators and tactics to help defenders investigate possible compromise. It accompanies, but is a distinct defensive publication from, the international infrastructure takedown already recorded in the tracker.

Date

21/05/2026

Ransomware Group

Event Category

Level of Cooperation

Country

🇺🇸 United States

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FBI publishes First VPN Service indicators and defensive guidance

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