The Japanese crowdfunding platform CAMPFIRE said on 24 April 2026 that personal data may have leaked from part of the systems that manage customer information, affecting 225,846 unique users, and that credit-card data is not included [1][2]. In its 2 June investigation report the company said an employee-issued GitHub credential was unintentionally uploaded to a server used for personal development and then misused, leading to unauthorized access to part of an internal cloud administration area; forensics found no trace that files containing personal data were transferred out, but because some areas had no logs the company could not rule out that data had been viewed, so it still treats the information as at risk of leakage [2]. The company warns people to beware of scams impersonating CAMPFIRE to ask for PINs or passwords, says it will never ask for a PIN by phone or email, asks recipients not to open unexpected mail or click links or attachments, and recommends checking bank statements and changing passwords if the same email and password are used on other services [1].
CAMPFIRE confirms personal data of up to 225,846 unique users may have been exposed
1 min read
- Disclosed
- Apr 24, 2026
- Occurred
- Apr 3, 2026
- Published
- Nov 12, 2026
- Last updated
- Nov 12, 2026
- Scale
- 225,846 people[2]
- CVSS basis
- Our assessment
- Technology
- Attack vector
- Impact
- Data type
- Actor type
- Motivation
On this page
30-second summary
What happened
Who is affected
Industries mainly affected: Finance
What to do nowOur advice
Timeline
Technical details
Remediation
Vendor guidance
- 1Watch for impersonation and check accounts verify[1]
Ignore requests for PINs or passwords, delete unexpected mail, and check bank statements.
References
Official / primary2
- [1]株式会社CAMPFIRE2026-04-24Accessed 2026-11-11Snapshot 2026-11-12 sha256 348040d6df3f
“その後の詳細調査の結果、顧客情報を管理するシステムの一部において、お客様の個人情報が漏えいした可能性があることが判明いたしました。”
- [2]株式会社CAMPFIRE2026-06-02Accessed 2026-11-11Snapshot 2026-11-12 sha256 eca26b9651b3
This site aggregates public information and is not security consulting advice. Test remediation steps before applying.