Cy-SIRT

Team Information
Team name	Cy-SIRT
Official team name	Cybozu Inc. Security Incident Response Team
Member since	June 14, 2026
Host organization	Cybozu, Inc.
Country of team	Japan  JP
Other countries of team	Viet Nam  VN
Date of establishment	2011-08-04
Website	https://cybozu.co.jp/en/company/

Team Contact Information
Regular telephone number	+81-3-6361-2504
Emergency telephone number	+81-3-6361-2504
E-mail address	security@cybozu.co.jp
Other communication facilities	Web contact form on https://cybozu.co.jp/en/company/contact/security/
Postal address	Tokyo Nihombashi Tower 27F, 2-7-1 Nihombashi, Chuo-ku, Tokyo 103-6027, Japan

Business Hours
Timezone	UTC+09:00 (JST)
Description of business hours	09:00 – 17:00 (UTC+09:00) weekday only, except Japanese national holidays
How to contact outside business hours	Please contact us by email or web form.

Constituency
Type of Constituency	Other commercial
Source of Constituency	Both external and internal
Description of Constituency	The constituency of Cy-SIRT will be the customer who is considering using our service or using our service, the partner who handles our products and employees of our company and our subsidiaries.
Internet Domain Address	cybozu.co.jp, cybozu.com, kintone.com, etc.
Country of Constituency	Australia, China, Japan, Malaysia, Taiwan (Province of China), Thailand, United States of America (the), Viet Nam  AU  CN  JP  MY  TW  TH  US  VN

Team contact information provided for Incident Response purposes only. FIRST strictly prohibits the use of contact information for solicitation or marketing.

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