Ambition DX Confirms Information Leak After File Server Intrusion; Settra Claims 437 GB Stolen
Summary
Ambition DX confirmed a leak of some information assets after unauthorized access to a file server. The company has not confirmed Settra’s claim that it stole 437 GB from am-bition[.]jp or identified affected individuals and records.
Key points
- The company said it confirmed unauthorized access after a file-server disruption and missing logs on August 6, 2026.
- On August 28, it confirmed leakage of some information assets; personal information may be involved, but affected people, record counts, and specific data remain under investigation.
- Settra listed am-bition[.]jp and claimed it obtained 437 GB, including rental, insurance, network, and authentication-related data. These claims and details have not been officially verified.
- Ambition DX has not identified Settra as the attacker or confirmed ransomware infection or data encryption.
- The company isolated affected systems, moved to a new network, and said business systems were restored; no related secondary misuse had been confirmed as of August 28.
- The company reported the matter to Japan’s Personal Information Protection Commission, consulted police, and urged caution about impersonation and payment-change requests.
Article Details
- Victim Organization
- 株式会社アンビションDXホールディングス
- Victim Domain
- am-bition.jp
- Incident Type
- Third-party unauthorized access to an internal file server, with confirmed leakage of some information assets. The company has not confirmed ransomware infection or encryption.
- Incident Date
- 2026-08-06
- Disclosure Date
- 2026-08-28
- Data Types Exposed
- Some information assets were confirmed leaked; the specific contents remain under investigation.
- Personal information may include names, addresses, telephone numbers, and email addresses relating to customers, property owners, tenants, business partners, and employees.
- Affected Records
- Not disclosed; the company was still identifying affected individuals and record counts as of 2026-08-28. Settra's claimed file and record counts are unverified.
- Affected Data Size
- Not disclosed by the company. Settra claimed 437 GB was obtained; this is unverified.
- Operational Impact
- Network isolation and system shutdowns initially delayed internal work, data exchange with business partners, and inquiry handling. The company later switched to a new network environment and restored all business systems; normal operations had resumed by 2026-08-28. Financial impact was still being assessed.
- Ransom Or Extortion
- Settra listed am-bition.jp on its data-leak site and claimed to have obtained 437 GB, with a countdown to publication. The company has not confirmed Settra's attribution or the claimed data volume, and has not disclosed a ransom demand.
- Claim Status
- confirmed