Confirmed ransomware activity has remained persistently high worldwide, with a Ransomnews dataset logging 9,291 verified attacks since 2018 and roughly 1,400 to 1,550 incidents annually since 2023. LockBit remains the leading group by confirmed victims since 2019, while Qilin leads 2026 year-to-date with 53 confirmed victims, followed closely by The Gentlemen with 51. The United States accounts for about half of confirmed attacks in the dataset, and healthcare remains one of the most heavily affected sectors, with 1,297 confirmed healthcare incidents recorded across the full period.
Attacks on healthcare accelerated further in the first half of 2026, with overall incidents rising 14% and attacks on healthcare businesses and service providers jumping 35% from the second half of 2025 and 110% from a year earlier. Reporting attributes the shift to criminals targeting central vendors and service providers to reach multiple downstream hospitals and steal large volumes of sensitive data; recent examples include incidents involving University of Mississippi Medical Center, Unimed, TriZetto Provider Solutions, and QualDerm Partners. Security leaders say hospitals and clinics still face chronic exposure from legacy medical devices, patching constraints, third-party dependence, limited budgets and staffing, and social-engineering attacks, raising the risk of operational disruption and patient-care delays.

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A July 2026 summary of the Ransomnews dataset reports 9,291 verified ransomware attacks worldwide from January 2018 through July 2026. The article also states that the United States accounts for about half of all confirmed attacks and that healthcare totals 1,297 incidents across the dataset.
The dataset summary says Qilin leads 2026 year-to-date with 53 confirmed victims, followed closely by The Gentlemen with 51.
According to the dataset summary, confirmed ransomware activity has stayed elevated since 2023 at roughly 1,400 to 1,550 attacks per year.
The reporting identifies a notable dip in confirmed ransomware activity in 2022 and associates it with the Conti shutdown and disruption stemming from the Russia-Ukraine war.
Reporting says cyberattacks against the healthcare sector increased in the first half of 2026, with healthcare businesses and service providers seeing much faster growth than hospitals and clinics. One cited dataset says healthcare attacks rose 14% overall, while attacks on healthcare businesses rose 35% from the second half of 2025 and 110% year over year.
The Ransomnews dataset summarized in the reporting covers confirmed ransomware incidents worldwide starting in January 2018, using victim disclosures, regulatory filings, official statements, and credible press reporting as inclusion criteria.
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