Costco — June 2014 breach

Clustered 3 filings across 3 jurisdictions · filing window Sep 22, 2015 → Sep 25, 2015. View entity profile → Other incidents for this victim →

⚠ 1 cross-filing discrepancy →Merge100%

Determination

Confirmed

Members

3 filings

States

Affected · reported

32,215

First → last filing

Sep 22, 2015 → Sep 25, 2015

Merge confidence

100%

incident inc_1a45921df4e74528 · merged by deterministic · confidence 100%

Confirmed breach. Merged as one breach: 3 regulatory filings. The filings describe a third-party compromise. Intrusion Jun 19, 2014–Jul 15, 2015, discovered Jul 17, 2015 — the first regulatory filing landed 67 days later. 32,215 individuals reported across the linked filings. Data reported: Identity (basic), Financial account, Credentials, and 2 more. Each member filing remains the legal record for its jurisdiction.

Litigation Timing

Supplemental

Notification delay

67days

Discovered → first regulatory filing

Discovery variance

0days

Range of discovered_at dates across filings

Filing span

3days

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.

No cross-filing comparison data available for this incident.

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