---
title: "Viasat KA-SAT network disruption"
description: "What the retained public evidence establishes about the Viasat KA-SAT incident, its attack path, impact, and response."
incident_type: "Cybersecurity incident"
status: "active"
last_modified: "2026-09-19"
canonical_url: "https://www.ally.security/incidents/viasat-ka-sat-network-disruption-2022"
markdown_url: "https://www.ally.security/incidents/viasat-ka-sat-network-disruption-2022.md"
stix_url: "https://www.ally.security/incidents/viasat-ka-sat-network-disruption-2022/stix.json"
---

# Viasat KA-SAT network disruption

Russian state-linked; AcidRain wiper, timed with the invasion of Ukraine. Bricked tens of thousands of modems across Europe; disrupted Ukrainian military comms and remote monitoring for thousands of German wind turbines.

Last modified Sep 19, 2026 · 1 source

## Summary

- **Environment:** Satellite/Telecom
- **Operational impact:** Bricked tens of thousands of modems across Europe; disrupted Ukrainian military comms and remote monitoring for thousands of German wind turbines
- **Financial impact:** No financial figure is established by the reviewed source evidence

## What happened

In Feb 2022, Viasat experienced an incident in its satellite/telecom environment. The retained source describes the attack path as follows: Russian state-linked; AcidRain wiper, timed with the invasion of Ukraine. [1](#source-1)

The documented consequence was: Bricked tens of thousands of modems across Europe; disrupted Ukrainian military comms and remote monitoring for thousands of German wind turbines. [1](#source-1)

## Impact

- Documented impact: Bricked tens of thousands of modems across Europe; disrupted Ukrainian military comms and remote monitoring for thousands of German wind turbines. [1](#source-1)
- No financial loss, ransom amount, recovery cost, or regulatory penalty is established by the reviewed source evidence.

## Threat Group & Attack Vector

The retained source describes the attack path as follows: Russian state-linked; AcidRain wiper, timed with the invasion of Ukraine. The canonical record does not add intrusion steps beyond those supported by the source. [1](#source-1)

### Actors

- No threat actor group has been identified in the reviewed public evidence.

### TTPs

- [T1561 — Disk Wipe](https://attack.mitre.org/techniques/T1561/) — mapped from the cited behavior. [1](#source-1)

## Response

The retained source describes system restoration or operational recovery work. [1](#source-1)

This account is bounded to [NCSC Annual Review 2023](https://www.ncsc.gov.uk/files/Annual_Review_2023.pdf). Details absent from that evidence are left unresolved rather than inferred. [1](#source-1)

## Assets

[Download the case-scoped STIX 2.1 bundle](<https://www.ally.security/incidents/viasat-ka-sat-network-disruption-2022/stix.json>)

## Sources

Primary source records used to research this incident.

<a id="source-1"></a>

### NCSC Annual Review 2023

research · UK National Cyber Security Centre

<https://www.ncsc.gov.uk/files/Annual_Review_2023.pdf>

<details>
<summary>Evidence ledger</summary>

Review the supporting structured claims.

1. **Resulted In · 100% confidence · current**  
   Viasat KA-SAT network disruption: The reviewed source documents the viasat ka-sat network disruption involving Viasat.
2. **Resulted In · 84% confidence · current**  
   Viasat KA-SAT network disruption: Bricked tens of thousands of modems across Europe; disrupted Ukrainian military comms and remote monitoring for thousands of German wind turbines.
3. **Resulted In · 90% confidence · current**  
   Viasat KA-SAT network disruption: The retained source describes system restoration or operational recovery work.
4. **Resulted In · 88% confidence · current**  
   Viasat KA-SAT network disruption: Russian state-linked; AcidRain wiper, timed with the invasion of Ukraine.
5. **Affected Organization · 100% confidence · current**  
   Viasat KA-SAT network disruption: Viasat
6. **Used Attack Technique · 90% confidence · current**  
   Viasat KA-SAT network disruption: https://attack.mitre.org/techniques/T1561/

</details>