Mercadien PC Certified Public Accountants — September 2025 breach

Clustered 12 filings across 10 jurisdictions · filing window Dec 24, 2025 → Oct 13, 2026 (dated filings only). View entity profile → Other incidents for this victim →

⚠ 1 cross-filing discrepancy →Merge100%

Determination

Confirmed

Members

12 filings

States

Affected · reported

402,741

First → last dated filing

Dec 24, 2025 → Oct 13, 2026

Merge confidence

100%

incident inc_3fe25aaa07ba4c3f · merged by deterministic · confidence 100%

Confirmed breach. Merged as one breach: 12 regulatory filings. The filings describe unauthorized access. Intrusion Sep 17, 2025–Oct 9, 2025, discovered Nov 7, 2025 — the first regulatory filing landed 47 days later; 4 later filings were flagged late. 402,741 individuals reported across the linked filings. Data reported: Government ID, Financial account, PII, and 1 more. Notifications rolled out on a 293-day schedule across 11 dated filings beginning Dec 24, 2025. Each member filing remains the legal record for its jurisdiction.

Litigation Timing

Supplemental

Notification delay

47days

Discovered → first regulatory filing

Discovery variance

0days

Range of discovered_at dates across filings

Filing span

293days

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 clocksTexas✗ TX AG >30dCalifornia✗ CA 60-day late · 312dOregon✗ OR AG >45dMaine⏱ ME AG >30d · 54dSouth Carolina✓ SC CRA notice dueFull clock table in Litigation Timeline

No cross-filing comparison data available for this incident.

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