Seiko Solutions

Japan-based services

Aliases / services: セイコーソリューションズ / セイコーソリューションズ株式会社 / Seiko Solutions Inc. / SEIKO TRUST / eviDaemon on Cloud / COMPACT IN / かんたん電子契約 / かんたん電子契約forクラウド / Seiko Solutions
Official website: https://www.seiko-sol.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: Some services remediated; contract-service reopening planned
Response information checked: 2026-10-27 Rechecked: 2026-10-27

SEIKO TRUST electronic-contract and evidence services operated by Seiko Solutions Inc.

October 23 update: eviDaemon on Cloud completed measures October 22 at 20:15; COMPACT IN at 16:32. Kantan Denshi Keiyaku remains under remediation, with October 29 at 10:00 reopening planned. Timestamp, eviDaemon for PAdES/XAdES and Kantan Denshi Keiyaku for Cloud are unaffected.

What users should do

Check the exact contracted service. Kantan Denshi Keiyaku users should await reopening guidance.

Official service URL

https://www.seiko-sol.co.jp/

Source URLs

PHP2Shell response and scopehttps://www.seikotrust.jp/support/maintenance/Response evidence
Operating entityhttps://www.seiko-sol.co.jp/company/profile/Service and operation documentation

Related official sources

PHP2Shell response and scopeOfficial notice
Operating entityOfficial information directory