Substack
1 breach663K affected in allTechsubstack.com
| Breach | Affected | ||||
|---|---|---|---|---|---|
| Substack notifies users that emails and phone numbers were stolen in 2025Feb 57 months agoHackingUnverified | Feb 57 months ago | Hacking | Media | Unverified | 663Kacct |
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Every breach here links to its sources and official notices. Across fru.dev: lawsuits, incidents and outages.
- 2026-09-25 · Substack, 2026-02-05 · source_type: press
- 2026-09-25 · Substack, 2026-02-05 · source_url: https://www.bleepingcomputer.com/news/security/newsletter-platform-substack-notifies-users-of-data-breach/
- 2026-09-25 · Substack, 2026-02-05 · country: US
- 2026-09-25 · Substack, 2026-02-05 · sector: media
- 2026-09-25 · Substack, 2026-02-05 · attack: hacking
- 2026-09-25 · Substack, 2026-02-05 · data_types: ["emails","phone","other"]
- 2026-09-25 · Substack, 2026-02-05 · disclosed: 2026-02-05
- 2026-09-25 · Substack, 2026-02-05 · discovered: 2026-02-03
- 2026-09-25 · Substack, 2026-02-05 · summary: Substack told users that an unauthorized party exploited a system flaw in October 2025 to obtain email addresses, phone numbers and internal metadata, which it found in February 2026. A threat actor leaked a database of 697,313 records; Sub
- 2026-09-25 · Substack, 2026-02-05 · title: Substack notifies users that emails and phone numbers were stolen in 2025
- 2026-09-25 · Substack, 2026-02-05 · added
- 2026-09-25 · Substack · added