HackingIDENTITY_GOVERNMENTIDENTITY_BASICMediumContained
EISAI INC.
bd_8ac324a55291e895 · schema v1 · pii pii-v1
Full breach record for EISAI INC. →Eisai Inc. notified the New Hampshire Attorney General of a cybersecurity incident involving unauthorized access to network files between May 22 and June 3, 2023. The breach affected 87 New Hampshire residents, whose information (including SSNs and credit card numbers) was accessed. Eisai engaged a cybersecurity firm, notified law enforcement, and began mailing notification letters on October 2, 2023, offering identity protection services.
Leak gap clock✗ Leak >180d17 weeks discovery → filing
⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.
This filing is one of 4 about the same incident.View merged incident
A leak claim by atomsilo about this victim predates this filing by 650 days.View originating leak claim
Linked disclosures
Why this link?Regulatory filings (3) · sorted by filing gap
- bd_278d9749e3b058b5Maine State AGfiled 2023-10-02Candidate
- bd_8312ac8b94d22469Vermont State AGfiled 2023-10-02Verified
- bd_e87b4887774c3dadMontana State AGfiled 2023-10-02Verified
Source provenance
- Source URL
- https://mm.nh.gov/files/uploads/doj/remote-docs/eisai-20231002.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
- Filed at
- Oct 2, 2023
- Raw hash
- e3cd1dee4d3064b92d576f5677d0f461b122c22f83f8d7754eac4c8ed8f36862
Reporting entity
- Name
- Edward J. McAndrewnorm: edward j mcandrew
Victim entity
- Name
- EISAI INC.norm: eisai
- Domain
- eisai.com
Incident
- Discovered
- Jun 3, 2023
- Materiality determined
- —
- Notification sent
- Oct 2, 2023
- Affected individuals
- 87
- Data types
- IDENTITY_GOVERNMENTIDENTITY_BASIC
- Attack vector
- Unauthorized Access
- MITRE ATT&CK
- T1078 Valid Accounts
- Threat actor
- External
- Initial access
- valid_credentials
Compliance
- Time to disclose
- 17 weeks(121 days from discovery to filing)
- Compliance flags
- Leak >180d
- Discovery-date grounding
- unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.
Extraction provenance
- Status
- No extraction artifact recorded for this disclosure.