HackingStolen CredentialsSupply Chain (3P Vendor)Data ExfiltratedIDENTITY_BASICIDENTITY_GOVERNMENTMediumContained
Simmons Bank
bd_f7bfd2a52e65b3ab · schema v1 · pii pii-v1
Full breach record for Simmons Bank →Simmons Bank notified California AG that a third-party vendor, Mayer Brown LLP, experienced a cybersecurity incident involving its vendor AMS Collaborator. The breach potentially exposed customer names, addresses, Social Security numbers, and driver's license numbers between September 2021 and August 2022. Simmons Bank offered 12 months of credit monitoring via Experian.
California clockDiscovered Sep 21, 2022 → Notified Nov 8, 202248d ✓ CA 60-day OK8 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 3 about the same incident.View merged incident
Linked disclosures
Why this link?Regulatory filings (2) · sorted by filing gap
- bd_361063e01f69d348Maine State AGfiled 2022-11-15Candidate
- bd_64e45f846e8d3fa7New Hampshire State AGfiled 2022-11-15Verified
Source provenance
- Source URL
- https://oag.ca.gov/ecrime/databreach/reports/sb24-559207
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
- Filed at
- Nov 15, 2022
- Raw hash
- 0bc42a62efefd6fdc2ae86d5cc032eb02c8d7e464e9b17ec6b40bcb2ff159bb7
Reporting entity
- Name
- Simmons Banknorm: simmons bank
Victim entity
- Name
- Simmons Banknorm: simmons bank
Incident
- Discovered
- Sep 21, 2022
- Materiality determined
- —
- Notification sent
- Nov 8, 2022
- Affected individuals
- Not disclosed
- Data types
- IDENTITY_BASICIDENTITY_GOVERNMENT
- Attack vector
- Third-Party / Supply Chain
- MITRE ATT&CK
- T1195 Supply Chain Compromise
- Threat actor
- External
- Regulator citations
- Submitted Breach Notification to California Office of the Attorney General
- Third party
- via Mayer Brown LLP
- Initial access
- supply_chain
Compliance
- Time to disclose
- 8 weeks(55 days from discovery to filing)
- Compliance flags
- CA 60-day OK · 48d
- 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.
- Clock breakdown
Statute Window Elapsed Threshold Status California Discovered: Sep 21, 2022→ Notified: Nov 8, 202248d 60 days (analyst band, pre-2026 discoveries) CA 60-day OK
Extraction provenance
- Status
- No extraction artifact recorded for this disclosure.