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Healthcare Data Breach

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Cybersecurity for Healthcare

Cybersecurity for Healthcare Organizations: A 2025 Guide

In February 2024, a ransomware attack on Change Healthcare — one of the largest health payment processors in the United States — disrupted claims processing for hospitals, pharmacies, and clinics across the country for weeks. UnitedHealth Group, its parent company, later confirmed that the personal health information of roughly 100 million individuals

Carl B. Johnson May 10, 2025 8 min read
Cybersecurity for Healthcare

Cybersecurity for Healthcare Organizations: A Field Guide

In October 2023, the healthcare sector reported more data breaches than any other industry — again. Prospect Medical Holdings was still recovering from an August ransomware attack that forced hospitals across four states to divert ambulances and revert to paper records. CommonSpirit Health's 2022 breach affected over 600,000

Carl B. Johnson Nov 09, 2023 7 min read
Cybersecurity for Healthcare

Cybersecurity for Healthcare Organizations: A 2022 Guide

In October 2020, the FBI, CISA, and HHS issued a joint advisory warning of an "imminent and increased" threat of ransomware attacks against U.S. hospitals. Within weeks, Universal Health Services — a Fortune 500 hospital chain operating 400 facilities — confirmed a Ryuk ransomware attack that forced staff to

Carl B. Johnson Jan 01, 2022 7 min read
Cybersecurity for Healthcare

Cybersecurity for Healthcare Organizations: A 2026 Guide

A Single Ransomware Attack Shut Down Patient Care for 28 Days In early 2024, Change Healthcare — one of the largest health payment processors in the United States — was hit by the ALPHV/BlackCat ransomware group. The breach disrupted claims processing for thousands of providers nationwide. UnitedHealth Group later confirmed approximately

Carl B. Johnson Nov 04, 2020 7 min read