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Medium

UBS Employee Data Compromised in Chain IQ Breach

As a client of Chain IQ, UBS was impacted by the Chain IQ data breach, which was claimed by the Worldleaks ransomware group on June 11, 2025.

Key points

  • Impacted by third-party Chain IQ data breach.
  • Employee business contact details and internal phone numbers compromised.
  • No client data was stolen.

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
Jun 11, 2025
Updated
Jun 26, 2026
Confidence
Medium
Evidence
2 sources

Structured assessment

Signal analysis

It helps compare this signal with other published signals without treating the labels as final determinations.

Threat source

Malware activity

Watch ransomware, endpoint compromise and business interruption exposure.

  • Source type: possible insider or internal misuse

Business impact

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

Mentioned entities

UbsData DisclosureChain IQUBSWorldleaksImpactedEmployee

Quick context

Questions about this signal

What happened in this signal?

As a client of Chain IQ, UBS was impacted by the Chain IQ data breach, which was claimed by the Worldleaks ransomware group on June 11, 2025. The breach resulted in the compromise of employee business contact details, including internal phone numbers, of selected UBS employees. UBS confirmed the incident but stated that no client data was stolen.

When was this signal reported?

Shadow Tier lists Jun 11, 2025 as the signal date.

Which organization is connected to this signal?

Ubs is the organization connected to this public signal.

Explore Ubs
Which attack pattern is relevant?

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

Explore current ransomware incidents
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