iArc

Japan-based services

Aliases / services: アイアーク / 株式会社アイアーク / iArc Co., Ltd. / 株式会社イシクラ / 株式会社石倉光芸社 / 有限会社石倉光芸社 / 株式会社キョーコロ / booth-mart / ブースマート / booth-mart.com / iArc
Official website: https://iarc.co.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: Corporate website and booth-mart resumed
Response information checked: 2026-10-27 Rechecked: 2026-10-27

Graduation-album and printing company, renamed from Ishikura after merging with Kyokoro in August 2026.

The October 26 second report confirms security work and reopening of the corporate site around October 23 at 18:00 and the album/book reservation service booth-mart around October 26 at 11:25.

What users should do

Use the corporate site and booth-mart normally.

Official service URL

https://iarc.co.jp/

Source URLs

PHP2Shell response and scopehttps://iarc.co.jp/news/etc/748Response evidence
Operating entityhttps://iarc.co.jp/companyService and operation documentation

Related official sources

PHP2Shell response and scopeOfficial notice
Operating entityOfficial information directory