HackingStolen CredentialsCapture Stored DataData ExfiltratedTargetedIDENTITY_BASICIDENTITY_GOVERNMENTMediumContained
EISAI INC.
bd_8312ac8b94d22469 · schema v1 · pii pii-v1
Full breach record for EISAI INC. →Eisai Inc. notified consumers of a data breach involving unauthorized access to network files between May 22 and June 3, 2023. The incident exposed names and government identifiers. Eisai engaged forensic investigators, notified law enforcement, and offered credit monitoring services. The investigation was completed by August 29, 2023.
Leak gap clock✗ Leak >180d5 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_8ac324a55291e895New Hampshire State AGfiled 2023-10-02Verified
- bd_e87b4887774c3dadMontana State AGfiled 2023-10-02Verified
Source provenance
- Source URL
- https://ago.vermont.gov/document/2023-10-02-eisai-data-breach-notice-consumers
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
- 5acabfa4639a066cbb61d39dddd2af1644ec72e3cb966a9dd8136746223dd843
Reporting entity
- Name
- EISAI INC.norm: eisai
- Domain
- eisai.com
Victim entity
- Name
- EISAI INC.norm: eisai
- Domain
- eisai.com
Incident
- Discovered
- Aug 29, 2023
- Materiality determined
- —
- Notification sent
- Oct 2, 2023
- Affected individuals
- Not disclosed
- Data types
- IDENTITY_BASICIDENTITY_GOVERNMENT
- Attack vector
- Unauthorized Access
- MITRE ATT&CK
- T1078 Valid AccountsT1119 Automated Collection
- Threat actor
- External
- Initial access
- valid_credentials
Compliance
- Time to disclose
- 5 weeks(34 days from discovery to filing)
- Compliance flags
- Leak >180dVT AG >14 bday
- 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.