Home / Incidents / Data breach
Ascension patient data exposed via former partner
A third-party software flaw at a former business partner exposed patient medical data.
- Organisation
- Ascension
- Disclosed
- 1 May 2025
- Affected
- 430,000
- Data
- Medical data
- Attacker
- Unknown
- Severity
- major
- Region
- Global
- Source
- CM Alliance monthly roundup ↗
Cite this
Nuffield Consulting, “Ascension patient data exposed via former partner”, The Daily Tech Wire outage & breach log, 1 May 2025. https://techwire.nuffieldconsulting.com/incidents/2025-05-01-ascension-breach/ (retrieved 15 Nov 2026).
This entry summarises public reporting. Please also cite the original source: CM Alliance monthly roundup, https://www.theregister.com/2025/05/01/ascension_cyberattack/.
Related incidents
- 8 May 2024Ascension hospitals revert to paper after ransomwareAscension · outage · Cyberattack
- 19 May 2025Legal Aid Agency hack exposes applicants' criminal recordsLegal Aid Agency · breach · Unknown · 2.1M claimed
- 13 May 2025M&S confirms customer data taken in crippling cyberattackMarks & Spencer · breach · DragonForce / Scattered Spider
- 2 May 2025Co-op member data stolen in DragonForce attackCo-op (UK) · breach · DragonForce / Scattered Spider · 6.5M records
- 28 May 2025LexisNexis Risk Solutions discloses December breachLexisNexis Risk Solutions · breach · Unknown · 364K records