PHP Vulnerability Responses by Company

Rhizome

Japan-based services
Aliases / services
株式会社リゾーム / Rhizome Ltd. / ITCOLLEGE / ITカレッジ / Rhizome
Official website
https://www.rhizo-me.com/

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

Response status by service

Corporate website

Response status
Patched and reopened
Response information checked
2026-10-27

Current re-audit: Official response verified · Research date: 2026-10-27

System development and engineering training services.

Reopened at 08:00 JST October 22 after fixes and verification; additional October 23 evening maintenance is also reported as ended.

Scope: Limited to rhizo-me.com, not all customer development projects.

What users should do

Use normally and report problems.

Official service URL

Source URLs

  1. PHP maintenance completed and websites restoredhttps://www.rhizo-me.com/news/20261021/Response evidence

ITCOLLEGE service website

Response status
Patched and reopened
Response information checked
2026-10-27

Current re-audit: Official response verified · Research date: 2026-10-27

Explicitly covered by emergency maintenance and the October 22 08:00 JST reopening; October 23 follow-up maintenance also ended.

Scope: The it-college.co.jp information site, separate from the learning platform.

What users should do

Use normally and report problems.

Source URLs

  1. PHP maintenance completed and websites restoredhttps://www.rhizo-me.com/news/20261021/Response evidence

Learning management system and related services

Response status
Unaffected
Response information checked
2026-10-27

Current re-audit: Official response verified · Research date: 2026-10-27

The notice excludes the learning platform and related services from impact and maintenance.

Scope: The notice does not claim PHP is absent; corporate-site patching is separate.

What users should do

Continue normal use.

Source URLs

  1. PHP maintenance completed and websites restoredhttps://www.rhizo-me.com/news/20261021/Response evidence
Related official sources
  1. PHP maintenance completed and websites restoredOfficial notice
  2. Company and operator informationOfficial information directory

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