DaVita Experiences Ransomware Attack, Data Exfiltrated
Kidney dialysis company DaVita experienced a ransomware attack over the past weekend (prior to April 18, 2025) that encrypted some elements of the company's network.
Key points
- Ransomware attack detected in mid-April 2025.
- Network elements encrypted and 1.51 TB of data exfiltrated.
- Interlock ransomware gang claimed responsibility.
Connected intelligence
Signal brief
Follow the organization, likely method and potential impact to explore connected Shadow Tier intelligence.
Organization
- Published
- Apr 18, 2025
- Updated
- Jun 26, 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
Watch ransomware, endpoint compromise and business interruption exposure.
Mentioned entities
Quick context
Questions about this signal
What happened in this signal?
Kidney dialysis company DaVita experienced a ransomware attack over the past weekend (prior to April 18, 2025) that encrypted some elements of the company's network. The Interlock ransomware gang claimed responsibility, stating they stole 1.51 terabytes of data and posted samples. DaVita is implementing additional security measures for restoration and is working with cybersecurity professionals to investigate the full impact.
When was this signal reported?
Shadow Tier lists Apr 18, 2025 as the signal date.
Which organization is connected to this signal?
Davita is the organization connected to this public signal.
Explore DavitaWhich attack pattern is relevant?
This signal is connected to current ransomware incidents based on its reported incident context.
Explore current ransomware incidentsWhich impact area is relevant?
This signal is connected to data exposure and breach intelligence based on its reported consequences.
Explore data exposure and breach intelligenceRelated signals
Compare shared topics, actors and incident patterns before opening the full signal.
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