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Confirmed4 filings · 3 statesUnverified claimConfirmedEnforcedpysahigh sensitivity

Merged incident · 4 filings

Blackhawk Mining, LLC — January 2021 breach

Clustered 4 filings across 4 jurisdictions · filing window Mar 3, 2021 → Sep 9, 2021. View entity profile → Other incidents for this victim →

⚠ 1 cross-filing discrepancy →Merge100%

Determination

Confirmed

Members

4 filings

States

Affected · reported

12,442

First → last filing

Mar 3, 2021 → Sep 9, 2021

Merge confidence

100%

incident inc_53ffd6eb1e604a50 · merged by human · confidence 100%

Confirmed breach. Merged as one breach: 3 regulatory filings and 1 unverified claim. The filing describes a ransomware attack. Intrusion Jan 28, 2021, discovered Jan 28, 2021 — the first regulatory filing landed 34 days later. 12,442 individuals reported across the linked filings. Data reported: Government ID, PII, and Identity (basic). Notifications rolled out on a 190-day schedule across 3 filings beginning Mar 3, 2021. Each member filing remains the legal record for its jurisdiction.

Litigation Timing

Notification delay

34days

Discovered → first regulatory filing

Leak precedence

Noneclaim trailed by 190d

Days between the first leak-site claim and the first regulatory filing. Positive = the claim came first (public exposure before disclosure). Negative = the claim trailed the filing, so there was no pre-disclosure leak. Counts regulatory filings only — press coverage is not a regulatory disclosure.

Filing span

190days

Time between earliest and latest filing

Not recorded for this incident

Discovery variance · Materiality delta · SEC filing delay — no SEC 8-K in this cluster; needs two dated filings.

Regulatory clocksMassachusetts✓ MA credit monitoring dueFull clock table in Litigation Timeline

No cross-filing comparison data available for this incident.

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