Clustered 4 filings across 3 jurisdictions · filing window Jun 26, 2025 → Jul 21, 2025. View entity profile → Other incidents for this victim →
incident inc_310568138e6a44fc · merge_method deterministic · confidence 100%
Discovered → first regulatory filing
Range of discovered_at dates across filings
PII
Time between earliest and latest filing
Not recorded for this incident
Leak precedence · Materiality delta · SEC filing delay — no leak-site claim in this cluster; no SEC 8-K in this cluster.
IN ME NH
all State AG
per-filing reported counts
State AGs report only their own residents; bars show per-filing counts.
Earliest sighting first · deep chronology in Litigation Timeline
Feb 21, 2025
When the intrusion reportedly occurred, per the linked filings
Feb 21, 2025
Reported by NEW HAMPSHIRE AG filing
May 19, 2025
Reported by MAINE AG, NEW HAMPSHIRE AG filings
About this clustering
DisclosureLens links filings into incidents through layered matchers: deterministic rules (same source document, multistate filings of one breach, tight-window same-victim pairs), a weighted-similarity scorer for cross-source candidates, and an operator review queue for everything uncertain. Each link records its own method and confidence — shown per filing in the timeline below. The system defaults to NOT merging when uncertain, because a false merge (collapsing two unrelated breaches) is more harmful than a false split (showing related filings separately); uncertain pairs route to human review instead of auto-merging. Filing summaries shown in the timeline are AI-generated extracts — verify each against its linked source.
Mengel Metzger Barr & Co LLP reported a data breach to the Indiana Attorney General. The breach occurred on 2025-02-21 and was reported on 2025-06-26. 7 Indiana residents were affected. 10,380 individuals affected in total.
Affected (this filing): 10,380
Mengel, Metzger, Barr & Co., LLP (MMB+CO), an accounting firm based in Latham, NY, experienced an external cyberattack on February 21, 2025. The breach was discovered on May 19, 2025. Personally identifiable information of 10,380 individuals may have been affected, including 29 Maine residents. Consumer notification letters were sent June 26, 2025. Experian credit monitoring (12 months) was offered to affected individuals.
Affected (this filing): 29
Mengel, Metzger, Barr & Co., LLP reported a cyberattack on February 21, 2025, affecting 44 New Hampshire residents. The incident exposed PII including names, SSNs, driver's licenses, financial account info, and some medical data. The firm detected the incident on May 19, 2025, secured systems, engaged third-party experts, and provided 12 months of credit monitoring to affected individuals.
Affected (this filing): 44
Mengel, Metzger, Barr & Co., LLP (MMB+CO) reported a supplemental cyberattack affecting 53 New Hampshire residents. The incident occurred on Feb 21, 2025, with PII confirmation on May 19, 2025. Exposed data included names, DOBs, SSNs, driver's licenses, financial accounts, and limited medical info. MMB+CO secured systems, engaged experts, and provided 12 months of credit monitoring. No evidence of misuse found.
Affected (this filing): 53