Data breach at Sony-owned internet provider compromises 2.6 million records

# Data breach at Sony-owned internet provider compromises 2.6 million records

https://gcdradar.vercel.app/incidents/data-breach-at-sony-owned-internet-provider-compromises-2-6 · AIR-2026-1610 · closed 2026-11-12

- Lane: Breaches & attacks
- Severity: 4 (Confirmed real-world loss): Confirmed real-world PII breach affecting millions of users.
- Fix status: No fix needed
- First reported: 2026-10-28 (happened 2026-10)
- AI role: No AI role
- Products: So-net member database

## Summary

Attackers broke into the So-net member database operated by Sony Network Communications, exposing personal information of over 2.58 million customers and email passwords for 54,401 users. The company disclosed the unauthorized access after confirming the information leak.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Affected and fixed versions

- Affected: So-net member database

## Latest updates

- 2026-10-28: Data breach at Sony-owned internet provider compromises 2.6 million customer records (https://helpnetsecurity.com/2026/10/28/sony-network-communications-data-breach-so-net)

## Sources

- 2026-10-28 Help Net Security: Data breach at Sony-owned internet provider compromises 2.6 million customer records https://helpnetsecurity.com/2026/10/28/sony-network-communications-data-breach-so-net
- 2026-10-28 BleepingComputer: Sony ISP subsidiary data breach exposes 2.5 million customer records https://bleepingcomputer.com/news/security/sony-isp-subsidiary-data-breach-exposes-25-million-customer-records
- 2026-10-29 SecurityWeek: Hackers Steal 2.6 Million Records From Sony’s Japanese ISP So-net https://securityweek.com/hackers-steal-2-6-million-records-from-sonys-japanese-isp-so-net

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.