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Medium

Volvo Group North America Discloses Data Breach via HR Supplier Miljödata Ransomware Attack

Volvo Group North America began notifying current and former employees on September 25, 2025, about a data breach stemming from a ransomware attack on its third-party HR software provider, Miljödata.

Key points

  • Disclosure and notification to affected Volvo Group North America employees began on September 25, 2025.
  • Breach originated from a ransomware attack on third-party HR software provider Miljödata in August 2025.
  • DataCarry ransomware group claimed responsibility for the attack on Miljödata.

Connected intelligence

Signal brief

Follow the organization, likely method and potential impact to explore connected Shadow Tier intelligence.

02

Likely method

Ransomware

Malware activity

03

Potential impact

Data Exposure

Confidentiality, Availability

Published
Sep 25, 2025
Updated
Jun 25, 2026
Confidence
Medium
Evidence
1 source

Structured assessment

Signal analysis

This analysis groups the signal by industry, likely incident action and impacted security area. It helps compare this signal with other published signals without treating the labels as final determinations.

Threat source

Malware activity

The feed marks multiple actor roles. Treat this as a review signal rather than a final attribution.

  • Source type: possible insider or internal misuse
  • Source type: supplier or third-party involvement

Business impact

Potential operational disruption
Impact area
Confidentiality, Availability
Likely asset
User or customer data

Mentioned entities

VolvoData DisclosureVolvo Group North America DisclosesHR Supplier MiljRansomware Attack Volvo Group NorthAmericaMiljDataCarryAdato and NoviWhile Volvo

Quick context

Questions about this signal

What happened in this signal?

Volvo Group North America began notifying current and former employees on September 25, 2025, about a data breach stemming from a ransomware attack on its third-party HR software provider, Miljödata. The attack, attributed to the DataCarry ransomware group, occurred in August 2025, compromising personal information from Miljödata's Adato and Novi support systems. While Volvo's internal systems were not directly breached, the incident exposed employee names and Social Security numbers for some individuals. The breach had a wider impact, affecting approximately 25 private companies, numerous educational institutions, and around 200 Swedish municipalities that also used Miljödata's services. Volvo is offering affected individuals 18 months of free identity protection and credit monitoring services.

When was this signal reported?

Shadow Tier lists Sep 25, 2025 as the signal date.

Which organization is connected to this signal?

Volvo is the organization connected to this public signal.

Explore Volvo
Which attack pattern is relevant?

This signal is connected to current ransomware incidents based on its reported incident context.

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Which impact area is relevant?

This signal is connected to data exposure and breach intelligence based on its reported consequences.

Explore data exposure and breach intelligence