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TENOHA Matsumae

TENOHA Matsumae (run by Tokyu Land Corporation) was hit in 1 recorded cybersecurity incident. The latest was disclosed on 2026-10-16.

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https://tenohamatsumae.com/

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Tokyu Land Corporation

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Incident history

Disclosed 2026-10-16Updated 2026-10-30Aichi, Chiba, Fukushima, Hiroshima, Kochi, Miyagi, Nagano, Niigata, Tokyo, Toyama[Investigating][Severity: Critical][Through a supplier][Major]
Studio: unauthorized access to the cloud environment of the Studio website builder
[Web app exploit][Data leak]Organizations 36

		Incident	Role	Impact level				Methods	Impacts		Status
2026-10-16	2026-10-30	Studio: unauthorized access to the cloud environment of the Studio website builder	[Through a supplier]	[Major]	[Critical]	36 Digital Agency, Nagoya City, Studio Inc., Chiba Prefectural Government, Hiroshima Prefecture, Nagano Prefectural Government, Money Forward, Inc., Niigata City, Akatsuki Inc., Akatsuki Media Studio Inc., Akatsuki Solutions Inc., Akatsuki Ventures Inc., and US Inc., Fuller, Inc., Hakky Inc., JIJ Inc., Link-U Group Inc., Luup, Inc., Money Forward Home, Inc., Money Forward Kessai, Inc., Money Forward X, Inc., Monicle Financial Inc., Monicle Research Inc., RAKSUL Inc., ReFact Inc., Relic Inc., SmartHR, Inc., StoryHub Inc., Susaki City, Tamura City, ThinQ Healthcare Inc., Toho Gas Co., Ltd., Tohoku EPCO Frontier Co., Inc., Tokyu Land Corporation, TVer Inc., Zenmetry Corporation	Aichi, Chiba, Fukushima, Hiroshima, Kochi, Miyagi, Nagano, Niigata, Tokyo, Toyama	[Web app exploit]	[Data leak]	Unknown	[Investigating]

Other incidents of the operator (1)

Disclosed 2026-10-30Updated 2026-10-30Tokyo[Contained][Severity: Major]
Tokyu Land: unauthorized access to a shared AWS server of managed websites may expose 4,082 personal records
[Web app exploit][Misconfiguration][Data leak][Service outage]Leaked 4.1KOrganizations 1

		Incident				Methods	Impacts		Status
2026-10-30	2026-10-30	Tokyu Land: unauthorized access to a shared AWS server of managed websites may expose 4,082 personal records	[Major]	1 Tokyu Land Corporation	Tokyo	[Web app exploit][Misconfiguration]	[Data leak][Service outage]	4,079	[Contained]