Brown Brothers Harriman & Co — December 2021 breach

Clustered 5 filings across 5 jurisdictions · filing window May 11, 2022 → May 23, 2022. View entity profile → Other incidents for this victim →

⚠ 2 cross-filing discrepancies →Merge100%

Determination

Confirmed

Members

5 filings

States

Affected · reported

2,800

First → last filing

May 11, 2022 → May 23, 2022

Merge confidence

100%

incident inc_04d49e32fd5c4f2d · merged by deterministic · confidence 100%

Part of the R. R. DONNELLEY & SONS COMPANY supply-chain incident (2022) — at least 3 organizations filed notifications naming this third party.

Confirmed breach. Merged as one breach: 5 regulatory filings. The filings describe a third-party compromise. Intrusion Dec 1, 2021, discovered Mar 1, 2022 — the first regulatory filing landed 71 days later. 2,800 individuals reported across the linked filings. Data reported: Government ID, Identity (basic), and Financial account. Notifications rolled out on a 12-day schedule across 5 filings beginning May 11, 2022. Each member filing remains the legal record for its jurisdiction.

Litigation Timing

Supplemental

Notification delay

71days

Discovered → first regulatory filing

Discovery variance

3days

Range of discovered_at dates across filings

Filing span

12days

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.

Regulatory clocksMaine⏱ ME AG >30d · 68dMassachusetts✓ MA credit monitoring dueFull clock table in Litigation Timeline

No cross-filing comparison data available for this incident.

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