Nikkei
Disclosed Nov 4, 202510 months ago17,368 affectedConfirmed
Nikkei Slack compromise exposes data of 17,368 people
Nikkei said its Slack workspace was compromised, potentially exposing names, email addresses and chat histories of 17,368 employees and business partners registered on Slack.
What is known
| People affected | 17,368 (as reported by the organization) |
|---|---|
| Disclosed | Nov 4, 2025 |
| Attack | Hacking |
| Data exposed | Names, Emails, Messages |
| Sector | Media · JP |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| Media giant Nikkei reports data breach impacting 17,000 peoplebleepingcomputer.com · News | News |
| Nikkei announcementnikkei.co.jp · The organization | The organization |
Notices filed
| Where | Filed | People |
|---|---|---|
| Researchtotal | Nov 4, 2025 | 17,368 |
History of this record
- 2026-09-25 · added · seed source
First seen 2026-09-25 (Research), confirmed by Research. Record counts are as reported. Not legal advice.