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Confidence MediumMar 17, 2026passaiccountynj.org

Passaic County, NJ Hit by Medusa Ransomware Attack

PatternExternal actor · Malware · Confidentiality impact

Passaic County, New Jersey, experienced a ransomware attack by the Medusa group on March 17, 2026. The attack disrupted the county's local government systems, including phone lines and IT infrastructure, affecting nearly 600,000 residents. Medusa claimed responsibility and demanded an $800,000 ransom. The county had initially announced a malware attack on March 4, but Medusa's claim and the specific ransomware strike date were reported on March 17. While Medusa claimed data exfiltration, the county has not fully confirmed the extent of data theft.

Signal date
Mar 17, 2026
Updated
Jun 26, 2026
Confidence
Medium
Sources
2 sources
passaiccountynj.org logo

Passaiccountynj

Sector
Public Administration
Signals
1 linked

Signal context

First seen: Mar 17, 2026

Last updated: Jun 26, 2026

Status: Public signal

Key points

  • Medusa ransomware attack on March 17, 2026.
  • Disrupted local government IT systems and phone lines.
  • Affected nearly 600,000 residents.

Signal analysis

Beta

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.

Affected organization
Passaiccountynj logo
Passaiccountynj

Sector: Public Administration

Likely country: Location not provided

Estimated
Threat source
Malware activity

Watch ransomware, endpoint compromise and business interruption exposure.

  • Source type: outside the affected organization
Business impact
Potential operational disruption

Impact area: Confidentiality, Availability

Likely asset: User or customer data

Trend context
23 signals with similar action pattern
  • 2 signals in the same sector
  • 100 signals with the same likely impact area
  • 1 signal linked to this organization/domain
Mentioned entities
PassaiccountynjData DisclosurePassaic CountyNJ HitMedusa Ransomware Attack Passaic CountyNew JerseyMedusaWhile MedusaDisruptedAffected

External sources

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