---
title: "SITA (aviation data processor) security incident"
description: "What the retained public evidence establishes about the SITA (aviation data processor) 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/sita-aviation-data-processor-security-incident-2021"
markdown_url: "https://www.ally.security/incidents/sita-aviation-data-processor-security-incident-2021.md"
stix_url: "https://www.ally.security/incidents/sita-aviation-data-processor-security-incident-2021/stix.json"
---

# SITA (aviation data processor) security incident

Breach of shared Passenger Service System. Frequent-flyer data exposed across multiple airlines (Air India, Singapore Airlines, Lufthansa, others).

Last modified Sep 19, 2026 · 1 source

## Summary

- **Environment:** Aviation/Travel IT
- **Operational impact:** Frequent-flyer data exposed across multiple airlines (Air India, Singapore Airlines, Lufthansa, others)
- **Financial impact:** No financial figure is established by the reviewed source evidence

## What happened

In 2021, SITA experienced an incident in its aviation/travel it environment. The retained source describes the attack path as follows: Breach of shared Passenger Service System. [1](#source-1)

The documented consequence was: Frequent-flyer data exposed across multiple airlines (Air India, Singapore Airlines, Lufthansa, others). [1](#source-1)

## Impact

- Documented impact: Frequent-flyer data exposed across multiple airlines (Air India, Singapore Airlines, Lufthansa, others). [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: Breach of shared Passenger Service System. 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

- No specific MITRE ATT\&CK technique is currently mapped for this case.

## Response

The reviewed source does not describe containment, notification, or restoration steps in enough detail to summarize them responsibly.

This account is bounded to [Chair's statement 2021](https://www.sita.aero/sita-activity-report-2021/executive-statements/chair-statement/). 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/sita-aviation-data-processor-security-incident-2021/stix.json>)

## Sources

Primary source records used to research this incident.

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

### Chair's statement 2021

official · SITA

<https://www.sita.aero/sita-activity-report-2021/executive-statements/chair-statement/>

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

Review the supporting structured claims.

1. **Resulted In · 89% confidence · current**  
   SITA (aviation data processor) security incident: Breach of shared Passenger Service System.
2. **Resulted In · 85% confidence · current**  
   SITA (aviation data processor) security incident: Frequent-flyer data exposed across multiple airlines (Air India, Singapore Airlines, Lufthansa, others).
3. **Resulted In · 100% confidence · current**  
   SITA (aviation data processor) security incident: The reviewed source documents the sita (aviation data processor) security incident involving SITA.
4. **Affected Organization · 100% confidence · current**  
   SITA (aviation data processor) security incident: SITA

</details>