Alten Sakai & Co. LLP
ent_0e5980165fcebed15d0e4a2f
Disclosures
5
State AG · 4 jurisdictions
Multi-filing incidents
1
incidents joining 2+ filings here
Max affected reported
2,737
nationwide · State AG OR
Leak-site claims
0
none in sample
Identity resolution
- Canonical name
- Alten Sakai & Co. LLP
- Normalized
- alten sakai— dedupe via name-norm; Microsoft / MSFT collapse to one row
- GLEIF LEI
- No match
- SEC EDGAR CIK
- None — not an SEC registrant
- Domain
- None on record
Disclosure history (5)newest first
- Massachusetts State AGas victim2025-09-23
Alten Sakai & Co, LLP reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2025-09-23. 14 Massachusetts residents were affected.
- Massachusetts State AGas victim2025-08-07
Alten Sakai & Co. LLP reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2025-08-07. 12 Massachusetts residents were affected.
- Nebraska State AGas victim2025-07-28
Alten Sakai & Co. LLP, an accounting firm, reported a data security incident to the Nebraska Attorney General on July 28, 2025. On May 19, 2025, suspicious activity was discovered, leading to unauthorized access to systems storing personal tax-related information. Two Nebraska residents were affected. Impacted data included names, addresses, SSNs, driver's license numbers, dates of birth, and bank account information. Alten Sakai engaged external cybersecurity experts, changed passwords, deployed enhanced security tools, and offered 12 months of credit monitoring via TransUnion/Cyberscout. Law enforcement was notified.
- Oregon State AGas victim2025-07-28
Alten Sakai & Co. LLP reported a data breach to the Oregon Attorney General. The breach was reported on 2025-07-28. The breach occurred during 5/19/2025. The breach was discovered on 5/19/2025. 2,737 individuals were affected. Notice was sent on 7/28/2025.
- Montana State AGas victim2025-07-28
Alten Sakai & Co. LLP, an accounting firm, disclosed unauthorized access to servers storing personal tax-related information. Suspicious activity was discovered on May 19, 2025. The incident exposed names, addresses, SSNs, dates of birth, and bank account information. The firm engaged cybersecurity specialists, notified law enforcement, and is offering 12 months of credit monitoring services to affected individuals.