---
title: "Sony security incident"
description: "What the retained public evidence establishes about the Sony 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/sony-security-incident-2023"
markdown_url: "https://www.ally.security/incidents/sony-security-incident-2023.md"
stix_url: "https://www.ally.security/incidents/sony-security-incident-2023/stix.json"
---

# Sony security incident

MOVEit/Cl0p. Employee data exposed. The retained public source confirms these facts.

Last modified Sep 19, 2026 · 1 source

## Summary

- **Environment:** Entertainment/Tech
- **Operational impact:** Employee data exposed
- **Financial impact:** No financial figure is established by the reviewed source evidence

## What happened

In 2023, Sony experienced an incident in its entertainment/tech environment. The retained source describes the attack path as follows: MOVEit/Cl0p. [1](#source-1)

The documented consequence was: Employee data exposed. [1](#source-1)

## Impact

- Documented impact: Employee data exposed. [1](#source-1)
- No financial loss, ransom amount, recovery cost, or regulatory penalty is established by the reviewed source evidence.

## Timeline

### October 4, 2023 — Documented public update

The [Sony confirms data breach impacting thousands in the US](https://www.bleepingcomputer.com/news/security/sony-confirms-data-breach-impacting-thousands-in-the-us/amp/) records the incident facts used in this briefing. [1](#source-1)

### September 19, 2026 — Briefing updated

This briefing was last reviewed and updated on September 19, 2026.

## Threat Group & Attack Vector

The retained source describes the attack path as follows: MOVEit/Cl0p. The canonical record does not add intrusion steps beyond those supported by the source. [1](#source-1)

### Actors

- **Cl0p** — identified in the supported attack description. [1](#source-1)

### TTPs

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

## Response

The retained source reports coordination with law enforcement as part of the incident response. [1](#source-1)
The retained source describes containment action intended to limit further access or disruption. [1](#source-1)

This account is bounded to [Sony confirms data breach impacting thousands in the US](https://www.bleepingcomputer.com/news/security/sony-confirms-data-breach-impacting-thousands-in-the-us/amp/). 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/sony-security-incident-2023/stix.json>)

## Sources

Primary source records used to research this incident.

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

### Sony confirms data breach impacting thousands in the US

news · BleepingComputer

<https://www.bleepingcomputer.com/news/security/sony-confirms-data-breach-impacting-thousands-in-the-us/amp/>

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

Review the supporting structured claims.

1. **Occurred At · 100% confidence · current**  
   Documented public update: 2023-10-04
2. **Resulted In · 88% confidence · current**  
   Sony security incident: MOVEit/Cl0p.
3. **Resulted In · 90% confidence · current**  
   Sony security incident: The retained source reports coordination with law enforcement as part of the incident response.
4. **Resulted In · 90% confidence · current**  
   Sony security incident: The retained source describes containment action intended to limit further access or disruption.
5. **Affected Organization · 100% confidence · current**  
   Sony security incident: Sony
6. **Resulted In · 100% confidence · current**  
   Sony security incident: The reviewed source documents the sony security incident involving Sony.
7. **Resulted In · 90% confidence · current**  
   Sony security incident: Employee data exposed.

</details>