INTERNET Watch
@internet_watch
So-net、会員データベースへの不正アクセスで会員情報約214万件などが漏えい。一部退会者も含む Plala（Sコース）会員情報も対象 t.co/Dqj33eGZwd
So-net
Security incidents tagged So-net. Newest first.
1 So-net incident in the last 12 months
Critical 4 · High 3 · Med 2 · Low 1 · Update ½Severity-weighted: critical 4 · high 3 · medium 2 · low 1 · update ½LessMore
- Incidents
- 1
- Live
- 1
- Patched
- 0
- Days without an incident
- 0
- Longest quiet run: 3 days (Oct 20–Oct 22)
- HighPartly patched
Sony's So-net ISP member database breached, 2.58 million records and 54,401 email passwords leaked
Sony Network Communications, which runs the Japanese internet provider So-net, disclosed on Oct 27 2026 that an attacker got into its So-net member database on Oct 19. It found the access on Oct 23 and shut the server down. Names, phone numbers, email addresses, user IDs, birth dates, gender and internet connection IDs leaked for 2,141,986 So-net members and 443,495 plala (S course) customers of NTT Docomo's Docomo Hikari, including people who left since March 2026. Email addresses and their mailbox passwords leaked for 54,401 addresses on four mail services, plus 16 bank account records. Member login passwords and card data were not exposed. The cause is still under investigation.
So-net and plala (S course) internet services (Sony Network Communications)Since Oct 19, 2026
