Citizens Financial Group Data Breach via Third-Party Vendor
The Everest ransomware group posted data from Citizens Financial Group on its dark web leak site on April 20, 2026.
Key points
- Data posted by Everest ransomware group on April 20, 2026.
- Breach originated from a compromised third-party vendor.
- Affected data included names, addresses, and bank account numbers.
Connected intelligence
Signal brief
Follow the organization, likely method and potential impact to explore connected Shadow Tier intelligence.
Organization
- Published
- Apr 20, 2026
- Updated
- Jul 3, 2026
- Confidence
- High
- Evidence
- 6 sources
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
Watch ransomware, endpoint compromise and business interruption exposure.
- Source type: supplier or third-party involvement
Business impact
- Impact area
- Confidentiality, Availability
- Likely asset
- User or customer data
Mentioned entities
Quick context
Questions about this signal
What happened in this signal?
The Everest ransomware group posted data from Citizens Financial Group on its dark web leak site on April 20, 2026. The breach originated from a compromised third-party vendor, not the bank's internal systems. While most of the compromised dataset consisted of masked test data, a small subset of real customer data was affected, including names, addresses, and bank account numbers. Highly sensitive data like Social Security numbers or financial credentials were not indicated.
When was this signal reported?
Shadow Tier lists Apr 20, 2026 as the signal date.
Which organization is connected to this signal?
Citizensbank is the organization connected to this public signal.
Explore CitizensbankWhich attack pattern is relevant?
This signal is connected to current ransomware incidents based on its reported incident context.
Explore current ransomware incidentsRelated signals
Compare shared topics, actors and incident patterns before opening the full signal.
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It has also lodged a police report and notified the Personal Data Protection Commission, and urged the public to remain vigilant against phishing emails, websites, text messages and phone calls from parties claiming to represent government agencies or other organisations. “We apologise for the concern and inconvenience this incident may cause,” the SLA said. The incident underscores the long-standing risk of real personal data finding its way into development and test environments , which are typically less closely guarded than production systems – a risk that is compounded when those environments are operated by third parties. It is also the latest in a series of supply chain security incidents in Singapore in recent years. In April 2025, Toppan Next Tech, a printing supplier for DBS Bank and the Singapore branch of Bank of China, was hit by a ransomware attack that saw customer data stolen by the threat actor . 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