---
title: "Farmers Insurance security incident"
description: "What the retained public evidence establishes about the Farmers Insurance 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/farmers-insurance-security-incident-2025"
markdown_url: "https://www.ally.security/incidents/farmers-insurance-security-incident-2025.md"
stix_url: "https://www.ally.security/incidents/farmers-insurance-security-incident-2025/stix.json"
---

# Farmers Insurance security incident

The retained public source describes the Farmers Insurance incident as Voice phishing induced personnel to authorize a malicious connected OAuth application in Salesforce. Other material details remain unresolved.

Last modified Sep 19, 2026 · 1 source

## Summary

- **Environment:** Insurance
- **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 2025, Farmers Insurance experienced an incident in its insurance environment. The retained source describes the attack path as follows: Voice phishing induced personnel to authorize a malicious connected OAuth application in Salesforce. [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.

## Timeline

### December 3, 2025 — Documented public update

The [Farmers Insurance data breach notice](https://oag.ca.gov/ecrime/databreach/reports/sb24-615004) 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: Voice phishing induced personnel to authorize a malicious connected OAuth application in Salesforce. 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

- [T1566 — Phishing](https://attack.mitre.org/techniques/T1566/) — mapped from the cited behavior. [1](#source-1)
- [T1528 — Steal Application Access Token](https://attack.mitre.org/techniques/T1528/) — mapped from the cited behavior. [1](#source-1)

## Response

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

This account is bounded to [Farmers Insurance data breach notice](https://oag.ca.gov/ecrime/databreach/reports/sb24-615004). 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/farmers-insurance-security-incident-2025/stix.json>)

## Sources

Primary source records used to research this incident.

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

### Farmers Insurance data breach notice

regulatory · California Attorney General

<https://oag.ca.gov/ecrime/databreach/reports/sb24-615004>

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

Review the supporting structured claims.

1. **Resulted In · 100% confidence · current**  
   Farmers Insurance security incident: The reviewed source documents the farmers insurance security incident involving Farmers Insurance.
2. **Occurred At · 100% confidence · current**  
   Documented public update: 2025-12-03
3. **Affected Organization · 100% confidence · current**  
   Farmers Insurance security incident: Farmers Insurance
4. **Used Attack Technique · 90% confidence · current**  
   Farmers Insurance security incident: https://attack.mitre.org/techniques/T1566/
5. **Used Attack Technique · 90% confidence · current**  
   Farmers Insurance security incident: https://attack.mitre.org/techniques/T1528/
6. **Resulted In · 82% confidence · current**  
   Farmers Insurance security incident: Voice phishing induced personnel to authorize a malicious connected OAuth application in Salesforce.

</details>