Platanus (IHC)

Japan-based services

Aliases / services: 医療法人社団プラタナス / イーク / IHC / myihc / Platanus / Platanus (IHC)
Official website: https://www.ihc.or.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: IHC website patched; other systems still being checked
Response information checked: 2026-10-27 Rechecked: 2026-10-27

Medical corporation operating IHC clinics and checkup booking services

On October 23, IHC reported that its provider had patched PHP for the official website. myihc and health-check online booking do not use PHP and are unaffected. Checks on other systems continue.

What users should do

Use the official website, myihc and online booking. Check further notices for other services.

Official service URL

https://www.ihc.or.jp/

Source URLs

PHP vulnerability response noticehttps://www.ihc.or.jp/news/6465/Response evidence
Organization and operator informationhttps://www.ihc.or.jp/concept/corporation/Service and operation documentation

Related official sources

PHP vulnerability response noticeOfficial notice
Organization and operator informationOfficial information directory