BST & CO. CPAS, LLP — December 2019 breach

Clustered 4 filings across 4 jurisdictions · filing window Feb 14, 2020 → Aug 18, 2025. View entity profile → Other incidents for this victim →

⚠ 1 cross-filing discrepancy →Merge100%

Determination

Enforced

Members

4 filings

States

Affected · reported

170,000

First → last filing

Feb 14, 2020 → Aug 18, 2025

Merge confidence

100%

incident inc_e99e64303e184fca · merged by deterministic · confidence 100%

Confirmed breach. Merged as one breach: 4 regulatory filings. The filings describe malware. Intrusion Dec 4, 2019–Dec 7, 2019, discovered Dec 7, 2019 — the first regulatory filing landed 69 days later. 170,000 individuals reported across the linked filings. Data reported: Government ID, PHI, Identity (basic), and 2 more. Notifications rolled out on a 2012-day schedule across 4 filings beginning Feb 14, 2020. Each member filing remains the legal record for its jurisdiction.

Litigation Timing

Notification delay

69days

Discovered → first regulatory filing

Discovery variance

0days

Range of discovered_at dates across filings

Filing span

2012days

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 clocksHIPAA✓ HHS notifiedMassachusetts✓ MA credit monitoring dueFull clock table in Litigation Timeline

No cross-filing comparison data available for this incident.

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