FSB Center 16
aka Static Tundra, Berserk Bear, Energetic Bear, Dragonfly, Ghost Blizzard
A unit of Russia's FSB that has targeted poorly configured routers and other network gear for over a decade, reaching into telecoms, energy and local governments.
- Alert level
- 2/ 5
- Reports & advisories (90 days)
- 0
- Known exploited CVEs
- 2
- Personal data leaked (disclosed)
- None confirmed
Attribution
- Assessed as Russian FSB Center 16 — US NSA, CISA, FBI, UK NCSC and European, Australian and Canadian partners
Exploited vulnerabilities and targeted products
If you run any of these products, first make sure they are updated to a fixed version.
How they attack
Entry
Targeting poorly configured routers
Like walking the street looking for back doors left unlocked with the factory-default password.
Inside
Pulling configuration files
Like taking home the building's wiring plan and key list to plan the next break-in.
Goal
Quietly stealing information
Like a spy who stays for months, copying files from the cabinet a little at a time.
Sources
Attributions are quoted as assessed by governments and security vendors. VulnPulse does not make attributions itself.
Leak counts only add up figures disclosed by the affected companies or authorities, never the attackers' own claims. We do not list victim names or link to leak sites.
The alert level is calculated automatically from reports and advisories in the last 90 days, known exploited vulnerabilities, and whether the group has targeted Japan.
Updated 2026-10-23 · daily