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Tokai University

Discovery Date: 2025-04-19

Estimated Attack Date: 2025-04-17

Tokai University Cyberattack Sparks Investigation By Police - The Pinnacle Gazette

Utsunomiya Central Clinic

Discovery Date: 2025-03-05

Estimated Attack Date: 2025-02-10

不正アクセスに伴う情報漏えいの可能性および当面の業務制限について|栃木県でがん治療,ガン検査なら宇都宮セントラルクリニック

Utsunomiya Central Clinic

Discovery Date: 2025-02-21

Estimated Attack Date: 2025-02-10

不正アクセスに伴う情報漏えいの可能性および当面の業務制限について|栃木県でがん治療,ガン検査なら宇都宮セントラルクリニック

NTT Communications Corporation (NTT)

Discovery Date: 2025-03-07

Estimated Attack Date: 2025-02-05

Data breach at Japanese telecom giant NTT hits 18,000 companies

Sanrio Entertainment

Discovery Date: 2025-01-27

Estimated Attack Date: 2025-01-21

Emergency Alert: Cyber Attack Strikes Popular Theme Parks! What You Need to Know

KAIKATSU FRONTIER Inc.

Discovery Date: 2025-01-23

Estimated Attack Date: 2025-01-18

Unauthorized Access and Possibility of Stolen Personal Information at a Consolidated Subsidiary

Nikki-Universal Co. Ltd.

Discovery Date: 2025-01-06

Estimated Attack Date: 2024-12-22

Nikki-Universal Cyber Attack - Hackers Claim 761.8 GB of Data Stolen

Sogo

Discovery Date: 2024-12-27

Estimated Attack Date: 2024-11-09

当社ファイルサーバーへの不正アクセスについて | リフォーム商材、住宅設備商社の株式会社ソーゴー

Betsudai Kōsan

Discovery Date: 2024-10-31

Estimated Attack Date: 2024-10-24

市営住宅におけるランサムウェア攻撃による情報漏えいに関するお知らせ／竹田市

Yorozu Corporation

Discovery Date: 2024-11-14

Estimated Attack Date: 2024-10-14

Yorozu Corporation Cyberattack Delays Financial Report Submission

Casio Computer Co.

Discovery Date: 2024-10-08

Estimated Attack Date: 2024-10-05

Casio Suffers Major Cyber Attack: Unauthorized Access to Network Confirmed

Ishimitsu & Co., Ltd.

Discovery Date: 2024-10-29

Estimated Attack Date: 2024-09-18

About the occurrence of ransomware damage

Zacros

Discovery Date: 2024-09-17

Estimated Attack Date: 2024-09-14

ランサムウェア被害の発生について - 藤森工業

株式会社関通 (Kantsu)

Discovery Date: 2024-09-13

Estimated Attack Date: 2024-09-12

｜新着ニュース｜物流倉庫アウトソーシングの関通（旧関西商業流通）

Sanyo Bussan Co.

Discovery Date: 2024-09-12

Estimated Attack Date: 2024-08-27

三陽物産 | News

KADOKAWA

Discovery Date: 2024-06-10

Estimated Attack Date: 2024-06-08

KADOKAWAグループの複数ウェブサイトにおける障害の発生について | 株式会社KADOKAWAのプレスリリース

Takano Sogo Accounting Firm

Discovery Date: 2024-07-17

Estimated Attack Date: 2024-06-04

Tokyo Marine Group 63,000 information leaks - Yo Japan Tech

Nidec

Discovery Date: 2024-10-20

Estimated Attack Date: 2024-05-26

Apology and Report with respect to the Recent Ransomware Infection

Okayama Psychiatric Medical Center

Discovery Date: 2024-06-11

Estimated Attack Date: 2024-05-19

日本一精神病院遭網絡攻擊最多4萬名患者信息被洩露 - 國際 - 香港文匯網

Hoya Corp

Discovery Date: 2024-04-04

Estimated Attack Date: 2024-03-30

Japanese lens maker Hoya halts production after cyberattack | Reuters

Fujitsu

Discovery Date: 2024-03-18

Estimated Attack Date: 2024-03-15

Tech large Fujitsu says it was hacked, warns of information breach - Tech Gate

Sumitomo Heavy Industries, Ltd.

Discovery Date: 2024-12-07

Estimated Attack Date: 2024-02-04

Unauthorized Access to SHI servers | Sumitomo Heavy Industries, Ltd.

RE&S Holdings

Discovery Date: 2024-01-11

Estimated Attack Date: 2024-01-10

RE&S latest Singapore-listed company to be hit by spate of ransomware attacks

Ofuji Fishing Tackles Co.,Ltd.

Discovery Date: 2024-01-29

Estimated Attack Date: 2023-12-13

お客様個人情報漏えいの可能性に関するご報告とお詫び｜お知らせ｜株式会社大藤つり具

Japan Aerospace Exploration Agency (JAXA)

Discovery Date:

Estimated Attack Date: 2023-11-29

Japan space agency hit with cyberattack, rocket and satellite info not accessed | Reuters

Wacoal

Discovery Date:

Estimated Attack Date: 2023-09-19

Wacoal hit by cyber attack

Seiko Group

Discovery Date:

Estimated Attack Date: 2023-07-28

重要なお知らせ詳細 | 重要なお知らせ | セイコーグループ

JACCS Corporation

Discovery Date:

Estimated Attack Date: 2023-07-25

Notice of unauthorized access

The Body Shop Japan

Discovery Date:

Estimated Attack Date: 2023-07-18

当社システムへの不正アクセス及びサービス提供への影響に関するお知らせ: ｜THE BODY SHOP (ザボディショップ)

Alps Alpine

Discovery Date: 2024-07-26

Estimated Attack Date: 2023-07-06

Cyberattacks on Our Group Companies

Nagoya Port Transport Association

Discovery Date:

Estimated Attack Date: 2023-07-04

名古屋港でシステム障害港運協会に脅迫文、サイバー攻撃か：時事ドットコム

KAMIJO

Discovery Date:

Estimated Attack Date: 2023-06-19

当社サーバへの不正アクセスに関するご報告とお詫び | KAMIJO 上條器械店

Eisai Co., Ltd.

Discovery Date:

Estimated Attack Date: 2023-06-06

Notification of Ransomware Incident | News Release：2023 | Eisai Co., Ltd.

JR East (East Japan Railway Co.)

Discovery Date: 2024-05-11

Estimated Attack Date: 2023-05-11

JR East briefly hit by system disruption due to cyberattack

NIPPON CONCRETE INDUSTRIES Co., LTD.

Discovery Date:

Estimated Attack Date: 2023-05-03

[Status Report] About the results of the investigation of ransomware damage

Future Inn

Discovery Date:

Estimated Attack Date: 2023-04-13

地方議会にシステム障害９０以上、サイバー攻撃で - 産経ニュース

Sankei Ai

Discovery Date:

Estimated Attack Date: 2023-04-12

【セキュリティニュース】サーバやPCがランサム感染、データが閲覧不能に - サンケイアイ（1ページ目 / 全1ページ）：Security NEXT

Tokyo MOU Port State Control authority

Discovery Date:

Estimated Attack Date: 2022-07-15

Tokyo MOU reveals cyber-attack compromised data | TradeWinds

Tokai University

Utsunomiya Central Clinic

Utsunomiya Central Clinic

NTT Communications Corporation (NTT)

Sanrio Entertainment

KAIKATSU FRONTIER Inc.

Nikki-Universal Co. Ltd.

Sogo

Betsudai Kōsan

Yorozu Corporation

Casio Computer Co.

Ishimitsu & Co., Ltd.

Zacros

株式会社関通 (Kantsu)

Sanyo Bussan Co.

KADOKAWA

Takano Sogo Accounting Firm

Nidec

Okayama Psychiatric Medical Center

Hoya Corp

Fujitsu

Sumitomo Heavy Industries, Ltd.

RE&S Holdings

Ofuji Fishing Tackles Co.,Ltd.

Japan Aerospace Exploration Agency (JAXA)

Wacoal

Seiko Group

JACCS Corporation

The Body Shop Japan

Alps Alpine

Nagoya Port Transport Association

KAMIJO

Eisai Co., Ltd.

JR East (East Japan Railway Co.)

NIPPON CONCRETE INDUSTRIES Co., LTD.

Future Inn

Sankei Ai

Tokyo MOU Port State Control authority

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