Home / Monthly reports / December 2025
Outages & Breaches: December 2025 in numbers
2 significant outages (0 critical) and 6 data breaches (4 critical) were logged in December 2025. The largest breach by records was Pornhub (200M claimed). The longest outage with a known duration was Cloudflare (24 minutes). The most common outage cause was configuration change (1 of 2).
Outages2▲ 1 vs November
Critical outages0wide impact
Downtime tracked0 hacross 1 outage with a known duration
Breaches6▼ 2 vs November
Critical breaches4sensitive data at scale
Records exposed39.9Mconfirmed or company-reported
Further claimed200Mattacker claims, unverified
Outage causes
Named attackers
Most significant incidents
- 15 Dec 2025SoundCloud breach affects about 29.8 million accountsSoundCloud · breach · ShinyHunters · 29.8M records
- 15 Dec 2025Pornhub premium analytics data stolen for extortionPornhub · breach · ShinyHunters · 200M claimed
- 15 Dec 2025700Credit API breach exposes 5.8 million700Credit · breach · Unknown · 5.8M records
- 3 Dec 2025University of Phoenix data stolen via Oracle EBS flawUniversity of Phoenix · breach · Clop · 3.5M records
- 15 Dec 2025Askul confirms theft of 740,000 customer recordsAskul · breach · RansomHouse · 740K records
- 5 Dec 2025Cloudflare briefly down while patching a vulnerabilityCloudflare · outage · Configuration change · 24 minutes
- 1 Dec 2025Shopify merchants locked out on Cyber MondayShopify · outage · Software bug
- 23 Dec 2025Nissan customer data stolen via vendor's Red Hat GitLabNissan · breach · Crimson Collective · 21K records
All 2 outages
- 5 Dec 2025Cloudflare briefly down while patching a vulnerabilityCloudflare · outage · Configuration change · 24 minutes
- 1 Dec 2025Shopify merchants locked out on Cyber MondayShopify · outage · Software bug
All 6 data breaches
- 23 Dec 2025Nissan customer data stolen via vendor's Red Hat GitLabNissan · breach · Crimson Collective · 21K records
- 15 Dec 2025SoundCloud breach affects about 29.8 million accountsSoundCloud · breach · ShinyHunters · 29.8M records
- 15 Dec 2025Pornhub premium analytics data stolen for extortionPornhub · breach · ShinyHunters · 200M claimed
- 15 Dec 2025Askul confirms theft of 740,000 customer recordsAskul · breach · RansomHouse · 740K records
- 15 Dec 2025700Credit API breach exposes 5.8 million700Credit · breach · Unknown · 5.8M records
- 3 Dec 2025University of Phoenix data stolen via Oracle EBS flawUniversity of Phoenix · breach · Clop · 3.5M records
2025 year to date
Incidents YTD135January to December 2025
Outages YTD50significant outages
Breaches YTD85data breaches
Critical YTD44outages and breaches
Records exposed YTD205Mconfirmed 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 |
| Sep | 6 | 7 | 7 | 107 |
| Oct | 4 | 7 | 7 | 118 |
| Nov | 1 | 8 | 4 | 127 |
| Dec | 2 | 6 | 4 | 135 |
| Total | 50 | 85 | 44 | 135 |
Cite this
Nuffield Consulting, “Outages & Breaches: December 2025 in numbers”, The Daily Tech Wire,published December 2025. https://techwire.nuffieldconsulting.com/reports/2025-12/ (retrieved 15 Nov 2026).
The underlying data for every month is in the CSV download.