Home / Monthly reports / September 2024
Outages & Breaches: September 2024 in numbers
6 significant outages (1 critical) and 4 data breaches (0 critical) were logged in September 2024. The largest breach by records was Temu (87M claimed). The longest outage with a known duration was MoneyGram (120 hours). The most common outage cause was cyberattack (5 of 6). 4 of the incidents mainly affected the UK.
Outages6same as August
Critical outages1wide impact
Downtime tracked122 hacross 2 outages with a known duration
Breaches4▼ 2 vs August
Critical breaches0sensitive data at scale
Records exposed2Mconfirmed or company-reported
Further claimed87Mattacker claims, unverified
Outage causes
Named attackers
Most significant incidents
- 20 Sep 2024MoneyGram transfers down for five days after cyber attackMoneyGram · outage · Cyberattack · 120 hours
- 26 Sep 2024Texas hospital diverts patients after ransomwareUMC Health System · outage · Cyberattack
- 18 Sep 2024TfL says customer bank details accessedTransport for London · breach · Scattered Spider (suspected) · 5K records
- 16 Sep 2024Cloudflare routing problem degrades services for two hoursCloudflare · outage · Network · 2 hours
- 9 Sep 2024Slim CD breach exposes 1.7 million cardsSlim CD · breach · Unknown · 1.7M records
- 9 Sep 2024Avis breach exposes about 300,000 customersAvis · breach · Unknown · 299K records
- 1 Sep 2024TfL cyber attack disrupts online services for weeksTransport for London · outage · Cyberattack
- 20 Sep 2024Ransomware hits Blackpool academy trust schoolsBlackpool schools trust · outage · Cyberattack
All 6 outages
- 26 Sep 2024Texas hospital diverts patients after ransomwareUMC Health System · outage · Cyberattack
- 20 Sep 2024MoneyGram transfers down for five days after cyber attackMoneyGram · outage · Cyberattack · 120 hours
- 20 Sep 2024Ransomware hits Blackpool academy trust schoolsBlackpool schools trust · outage · Cyberattack
- 16 Sep 2024Cloudflare routing problem degrades services for two hoursCloudflare · outage · Network · 2 hours
- 4 Sep 2024Tewkesbury council shuts systems after cyber attackTewkesbury Borough Council · outage · Cyberattack
- 1 Sep 2024TfL cyber attack disrupts online services for weeksTransport for London · outage · Cyberattack
All 4 data breaches
- 18 Sep 2024TfL says customer bank details accessedTransport for London · breach · Scattered Spider (suspected) · 5K records
- 17 Sep 2024Temu denies 87 million-record breach claimTemu · breach · smokinthashit · 87M claimed
- 9 Sep 2024Slim CD breach exposes 1.7 million cardsSlim CD · breach · Unknown · 1.7M records
- 9 Sep 2024Avis breach exposes about 300,000 customersAvis · breach · Unknown · 299K records
2024 year to date
Incidents YTD110January to September 2024
Outages YTD46significant outages
Breaches YTD64data breaches
Critical YTD25outages and breaches
Records exposed YTD538Mconfirmed or company-reported
| Month | Outages | Breaches | Critical | Running total |
|---|---|---|---|---|
| Jan | 6 | 9 | 4 | 15 |
| Feb | 4 | 9 | 5 | 28 |
| Mar | 6 | 8 | 2 | 42 |
| Apr | 5 | 3 | 0 | 50 |
| May | 4 | 9 | 5 | 63 |
| Jun | 5 | 8 | 4 | 76 |
| Jul | 4 | 8 | 3 | 88 |
| Aug | 6 | 6 | 1 | 100 |
| Sep | 6 | 4 | 1 | 110 |
| Total | 46 | 64 | 25 | 110 |
Cite this
Nuffield Consulting, “Outages & Breaches: September 2024 in numbers”, The Daily Tech Wire,published September 2024. https://techwire.nuffieldconsulting.com/reports/2024-09/ (retrieved 15 Nov 2026).
The underlying data for every month is in the CSV download.