Home / Monthly reports / August 2025
Outages & Breaches: August 2025 in numbers
2 significant outages (1 critical) and 7 data breaches (5 critical) were logged in August 2025. The largest breach by records was Bouygues Telecom (6.4M). The most common outage cause was cyberattack (2 of 2). 1 of the incidents mainly affected the UK.
Outages2▼ 2 vs July
Critical outages1wide impact
Breaches7same as July
Critical breaches5sensitive data at scale
Records exposed16.7Mconfirmed or company-reported
Outage causes
Named attackers
Most significant incidents
- 28 Aug 2025TransUnion breach exposes 4.4 million peopleTransUnion · breach · ShinyHunters · 4.4M records
- 25 Aug 2025Farmers Insurance data stolen in Salesforce campaignFarmers Insurance · breach · ShinyHunters · 1.1M records
- 24 Aug 2025Ransomware shuts Nevada state offices and websitesState of Nevada · outage · Cyberattack
- 13 Aug 2025Dutch lab pays ransom after cervical screening data stolenClinical Diagnostics (NL) · breach · Nova · 485K records
- 6 Aug 2025Bouygues Telecom breach exposes 6.4 million customersBouygues Telecom · breach · Unknown · 6.4M records
- 5 Aug 2025DaVita ransomware hits 2.6 million patientsDaVita · breach · Interlock · 2.6M records
- 20 Aug 2025Orange Belgium breach affects 850,000 customersOrange Belgium · breach · Unknown · 850K records
- 12 Aug 2025Colt telecoms hit by WarLock ransomwareColt Technology Services · outage · Cyberattack
All 2 outages
- 24 Aug 2025Ransomware shuts Nevada state offices and websitesState of Nevada · outage · Cyberattack
- 12 Aug 2025Colt telecoms hit by WarLock ransomwareColt Technology Services · outage · Cyberattack
All 7 data breaches
- 28 Aug 2025TransUnion breach exposes 4.4 million peopleTransUnion · breach · ShinyHunters · 4.4M records
- 25 Aug 2025Farmers Insurance data stolen in Salesforce campaignFarmers Insurance · breach · ShinyHunters · 1.1M records
- 20 Aug 2025Orange Belgium breach affects 850,000 customersOrange Belgium · breach · Unknown · 850K records
- 13 Aug 2025Dutch lab pays ransom after cervical screening data stolenClinical Diagnostics (NL) · breach · Nova · 485K records
- 7 Aug 2025Columbia University hack exposes 870,000Columbia University · breach · Hacktivist · 869K records
- 6 Aug 2025Bouygues Telecom breach exposes 6.4 million customersBouygues Telecom · breach · Unknown · 6.4M records
- 5 Aug 2025DaVita ransomware hits 2.6 million patientsDaVita · breach · Interlock · 2.6M records
2025 year to date
Incidents YTD94January to August 2025
Outages YTD37significant outages
Breaches YTD57data breaches
Critical YTD22outages and breaches
Records exposed YTD107Mconfirmed or company-reported
| Month | Outages | Breaches | Critical | Running total |
|---|---|---|---|---|
| Jan | 5 | 9 | 0 | 14 |
| Feb | 6 | 6 | 2 | 26 |
| Mar | 5 | 5 | 1 | 36 |
| Apr | 9 | 9 | 3 | 54 |
| May | 2 | 7 | 3 | 63 |
| Jun | 4 | 7 | 4 | 74 |
| Jul | 4 | 7 | 3 | 85 |
| Aug | 2 | 7 | 6 | 94 |
| Total | 37 | 57 | 22 | 94 |
Cite this
Nuffield Consulting, “Outages & Breaches: August 2025 in numbers”, The Daily Tech Wire,published August 2025. https://techwire.nuffieldconsulting.com/reports/2025-08/ (retrieved 15 Nov 2026).
The underlying data for every month is in the CSV download.