Clustered 3 filings across 3 jurisdictions · filing window Mar 3, 2026 → Mar 6, 2026. View entity profile → Other incidents for this victim →
incident inc_f0d16c8fe6a64b45 · merge_method deterministic · confidence 100%
Discovered → first regulatory filing
Range of discovered_at dates across filings
PII · Identity (basic) · Government ID
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
Jan 21, 2026
When the intrusion reportedly occurred, per the linked filings
Jan 21, 2026
Reported by MAINE AG, NEW HAMPSHIRE AG filings
On Jan 21, 2026, Brown Advisory LLC discovered unauthorized access by an external threat actor to certain systems via a limited number of applications. Exposed data: names, phone numbers, email addresses, SSNs, driver's license/passport images, financial account numbers. 1,980 total affected; 14 Maine residents. Passwords/session tokens reset; 24-month Experian IdentityWorks offered.
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.
Affected (this filing): 14
Brown Advisory LLC reported a data breach to the Indiana Attorney General. The breach occurred on 2026-01-21 and was reported on 2026-03-03. 9 Indiana residents were affected. 1,980 individuals affected in total.
Affected (this filing): 1,980
Brown Advisory LLC reported a social engineering/phishing incident to the New Hampshire Attorney General on March 6, 2026. The breach, discovered on January 21, 2026, affected approximately 8 New Hampshire residents. The threat actor gained unauthorized access to a limited set of applications for less than six hours, potentially exposing names, SSNs, driver's license images, passport images, and financial account numbers. Brown Advisory engaged forensic experts, notified law enforcement, contained the threat, and is offering 24 months of credit monitoring via Experian.
Affected (this filing): 8