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Sony FeliCa IC Chip Vulnerability and Cyber Attack Impacting Personal Data

First seen 23 Jul 2026, 03:23 UTC • •
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ThreatCluster AI
ThreatCluster •July 24, 2026 at 01:16 UTC
  • •Sony's FeliCa IC chips produced before 2017 have a critical vulnerability (CVE-2026-59776).
  • •Nichirei Holdings experienced a cyber attack that compromised servers containing personal data.
  • •Affected individuals have been notified, and operations are set to return to normal soon.

A vulnerability (CVE-2026-59776) was discovered in certain FeliCa IC chips produced by Sony before 2017, leading to reduced security strength during cryptographic processes. This flaw allows potential attackers to read or alter data within the chips. In a related incident, Nichirei Holdings reported a cyber attack affecting their servers, which contained personal information. They are collaborating with external security firms and law enforcement to investigate the breach. Notifications have been sent to affected individuals, and operations are expected to resume normally by the end of the week. The situation remains under close scrutiny as investigations continue.

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Timeline

2026-07-21
CVE-2026-59776 published
Sony disclosed a vulnerability in FeliCa IC chips affecting cryptographic processes, leading to security concerns.
jvn.jp
2026-07-23
Nichirei reports cyber attack
Nichirei Holdings confirmed a cyber attack affecting servers with personal data, collaborating with security experts and police.
www.nichirei.co.jp

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