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Hackers steal 2.6 million records from Sony ISP So-net

Original title: Hackers Steal 2.6 Million Records From Sony’s Japanese ISP So-net

SecurityWeekby Eduard Kovacs ()2 min read
Part of a story covered by 5 sourcesSony ISP breach exposes 2.58 million So-net and plala recordsMerged summary & timeline
AI summary · x-ai/grok-4.7Summaries by Vani AI

Intruders hit the member database on October 19, taking subscriber data plus about 54,000 email passwords and 16 bank records.

Sony Network Communications said attackers stole personal data on current and former So-net and Plala subscribers in Japan. Nearly 2.6 million records were taken after a break-in on October 19 that the company noticed on October 23. Stolen fields include names, birth dates, phone numbers, emails and connection IDs, plus passwords for four extra mail services. How the attackers entered is still unknown; the case was reported to Japan’s Personal Information Protection Commission.

Unconfirmed: So-net has not identified how the attackers gained access and says the investigation continues.

Key facts
  • Of the records, 2.14 million are So-net and 443,000 are Plala S Course.
  • About 293,000 records are for customers who left in March 2026 or later.
  • Roughly 54,000 mailbox passwords were exposed; the free basic mailbox was not.
  • Password resets began October 27; 16 bank records lacked PINs, and no cards were stored.
  • NURO and other Sony offerings do not appear affected.
Security assessment · AI, from the article

Impact: Subscriber personal data, email passwords and 16 bank records exposed

What to do
  1. 1.Set a new password if So-net forced a reset on an affected mailbox.
Analyze this story with Vani AIImpact, who is affected and what defenders should do, in a new chat

From the original article

2 min read at securityweek.com

The data of So-net and Plala customers in Japan was exposed, along with 54,401 email account passwords and 16 bank account records. The post Hackers Steal 2. 6 Million Records From Sony’s Japanese ISP So-net appeared first on SecurityWeek.

SecurityWeek

By Eduard Kovacs · securityweek.com

Read the full article at SecurityWeek

A short excerpt; the article and its images belong to the publisher. Summary, key facts and assessment above are AI-written from the article and can be wrong.