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

# Johnson Controls security incident

The retained public source describes the Johnson Controls incident as Dark Angels ransomware. Other material details remain unresolved.

Last modified Sep 19, 2026 · 1 source

## Summary

- **Environment:** Building/industrial tech
- **Operational impact:** The reviewed source does not establish a precise operational or data impact
- **Financial impact:** No financial figure is established by the reviewed source evidence

## What happened

In 2023, Johnson Controls experienced an incident in its building/industrial tech environment. The retained source describes the attack path as follows: Dark Angels ransomware. [1](#source-1)

## Impact

- The reviewed source does not establish a precise affected-person count, data scope, or operational consequence.
- 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: Dark Angels ransomware. The canonical record does not add intrusion steps beyond those supported by the source. [1](#source-1)

### Actors

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

### TTPs

- [T1486 — Data Encrypted for Impact](https://attack.mitre.org/techniques/T1486/) — mapped from the cited behavior. [1](#source-1)

## Response

The retained source describes containment action intended to limit further access or disruption. [1](#source-1)
The retained source describes system restoration or operational recovery work. [1](#source-1)
The retained source describes a forensic or specialist investigation of the incident. [1](#source-1)

This account is bounded to [Johnson Controls International Form 10-K](https://www.sec.gov/Archives/edgar/data/833444/000083344424000011/jci-20231231.htm). 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/johnson-controls-security-incident-2023/stix.json>)

## Sources

Primary source records used to research this incident.

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

### Johnson Controls International Form 10-K

regulatory · U.S. Securities and Exchange Commission

<https://www.sec.gov/Archives/edgar/data/833444/000083344424000011/jci-20231231.htm>

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

Review the supporting structured claims.

1. **Resulted In · 100% confidence · current**  
   Johnson Controls security incident: The reviewed source documents the johnson controls security incident involving Johnson Controls.
2. **Resulted In · 90% confidence · current**  
   Johnson Controls security incident: The retained source describes a forensic or specialist investigation of the incident.
3. **Used Attack Technique · 90% confidence · current**  
   Johnson Controls security incident: https://attack.mitre.org/techniques/T1486/
4. **Resulted In · 86% confidence · current**  
   Johnson Controls security incident: Dark Angels ransomware.
5. **Resulted In · 90% confidence · current**  
   Johnson Controls security incident: The retained source describes system restoration or operational recovery work.
6. **Resulted In · 90% confidence · current**  
   Johnson Controls security incident: The retained source describes containment action intended to limit further access or disruption.
7. **Affected Organization · 100% confidence · current**  
   Johnson Controls security incident: Johnson Controls

</details>