Lyce · Hybrid Watch

hw_c90b749924e17027

Killnet hack on NATO Cooperative Cyber Defence Centre of Excellence website and several Estonian online state services.

Russian hacking unit Killnet, linked to the GRU, targeted the NATO Cyber Defence Centre and made some systems inaccessible, although it did not penetrate any networks. The attack was coordinated witha physical message in graffiti on the complex’s wall, saying “Killnet hacked you.”

Occurrence
2022-04-15
Publication
2022-04-15T07:49:42Z
First observed
2026-09-24T06:09:10.079Z
Review status
Not assessed
Countries
EE
Updated
2026-09-30T10:02:34.709Z

E/M/R/S scores

  • EExistence0/4 · Not assessed
  • MIntent0/4 · Not assessed
  • RRussian actor link0/4 · Not assessed
  • SRussian state responsibility0/4 · Not assessed

Facts

No facts

Sources

  1. Role
    discovery_lead
    Date
    2022-04-15T07:49:42Z

    Russian hacking unit Killnet, linked to the GRU, targeted the NATO Cyber Defence Centre and made some systems inaccessible, although it did not penetrate any networks. The attack was coordinated witha physical message in graffiti on the complex’s wall, saying “Killnet hacked you.”