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Breach intelligence · WI

HIPAA Breaches in Wisconsin

14 reported healthcare data breach incidents affecting 237K individuals. Sourced from 7 federal and community intelligence feeds. Updated nightly.

14

Incidents reported

237K

Individuals affected

Hacking

Top attack vector

Stable

6-month trend

Recent incidents

Latest breaches reported in Wisconsin

DateEntityIndividualsSourceSeverity
Mar 2, 2026Exact Sciences Laboratories LLC2,658Hhs Breach
Dec 25, 2025Wisconsin Department of Corrections1,723Hhs Breach
Dec 25, 2025Morton Drug Company40,051Hhs Breach
Dec 25, 2025Marshfield Clinic Health System35,952Hhs Breach
Dec 24, 2025Assisted Living Pharmacy Service, LLC5,590Hhs Breach
Dec 24, 2025zizzl llc2,416Hhs Breach
Dec 24, 2025Jack L Marcus705Hhs Breach
Dec 24, 2025City of Franklin3,233Hhs Breach
Dec 24, 2025Clement Manor500Hhs Breach
Dec 24, 2025Radiology Chartered12,656Hhs Breach
Dec 24, 202590 Degree Benefits, Inc. – St. Paul1,268Hhs Breach
Dec 24, 2025Bell Ambulance, Inc.114,000Hhs Breach
Dec 24, 2025Dove Healthcare16,255Hhs Breach
Jan 1, 1970A-Z License List0State Ag

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Most affected entities

Top healthcare entities in Wisconsin by incident count

#1

A-Z License List

1

incidents

0

individuals

#2

Exact Sciences Laboratories LLC

1

incidents

3K

individuals

#3

Wisconsin Department of Corrections

1

incidents

2K

individuals

#4

Morton Drug Company

1

incidents

40K

individuals

#5

Marshfield Clinic Health System

1

incidents

36K

individuals

Attack vectors

How breaches happen in Wisconsin

Breakdown of breach types reported across 14 incidents in Wisconsin. Understanding which vectors dominate helps practices prioritize their security controls.

  • Hacking/IT Incident10 (71%)
  • Unauthorized Access/Disclosure3 (21%)
  • Other/Unknown1 (7%)

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14 breaches in Wisconsin. Is your practice next?

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FAQ

Healthcare breaches in Wisconsin

How many HIPAA breaches have occurred in Wisconsin?

Patient Protect tracks 14 reported healthcare data breach incidents in Wisconsin, affecting approximately 237K individuals. Data is sourced from HHS OCR, State Attorney General offices, FTC enforcement, and community intelligence — updated nightly.

What is the most common breach type in Wisconsin?

The most frequently reported breach vector in Wisconsin is Hacking/IT Incident, accounting for 10 of 14 incidents. Unauthorized Access/Disclosure is the second most common with 3 incidents.

Are independent practices in Wisconsin at higher risk?

Independent healthcare practices are the fastest-growing target for healthcare cyberattacks nationwide — attacks on small providers have increased 6x since 2021. Wisconsin practices face the same threat landscape with fewer resources to defend against it. Patient Protect provides breach prevention specifically for independent practices starting at $39/month.

Explore the full breach intelligence dashboard with 12 analytical views, risk forecasting, and attack chain visualization.

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