TJK Health Insurance Society

Japan-based services

Aliases / services: TJK / 東京都情報サービス産業健保 / Tokyo Information Service Industry Health Insurance Society / TJK Health Insurance Society
Official website: https://www.tjk.gr.jp/

Each response applies only to its stated service scope. “Not listed” does not mean unpatched or unaffected.

Response status by service

Listed services and systems

Response status: Main systems unaffected; Narita sports booking under maintenance
Response information checked: 2026-10-27 Rechecked: 2026-10-27

A health insurance society for the information services industry.

The 22 October notice confirms no PHP use in its website, Pep Up, eligibility, health check, resort, subsidy, event, K-Cabin, MIEL and document systems. Narita sports ground booking is under PHP maintenance.

What users should do

Follow updates for Narita sports ground reservations; contact general affairs at 03-3239-9811.

Official service URL

https://www.tjk.gr.jp/

Source URLs

PHP vulnerability responsehttps://www.tjk.gr.jp/news/php.htmlResponse evidence

Related official sources

PHP vulnerability responseOfficial notice