Warner Music Group — April 2020 breach
Clustered 7 filings across 7 jurisdictions · filing window Sep 2, 2020 → Sep 9, 2020. View entity profile → Other incidents for this victim →
incident inc_8e99405f0cbe4a96 · merged by deterministic · confidence 100%
Litigation Timing
SupplementalDiscovered → first regulatory filing
Range of discovered_at dates across filings
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.
Sensitive data
financial_credentialsIncident timeline
Dashed segments are unestablished, not zero — they fill in as filings merge into this incident.
Member cascade — every filing about this breach
- SEP 2MT AGMT AG noticefirst filing · 310 MT residentsauto-linkedday 0
- SEP 2SC AGSC AG notice1,109 SC residentsauto-linkedday 0
- SEP 2CA AGCA AG noticeno count statedauto-linkedday 0
- SEP 2WA AGWA AG notice3,368 WA residentsday 0
- SEP 3IN AGIN AG noticestates nationwide total 130,000auto-linked+1d
- SEP 4NH AGNH AG notice646 NH residentsauto-linked+2d
- SEP 9MA AGMA AG noticemost recent · 3,427 MA residentsauto-linked+7d
- Watching for additional filings — new sources merge into this incident automatically.
Roll-up facts — reconciled across members
- Breach window
- Apr 25, 2020 – Aug 5, 2020 MT AG
- Discovered
- Aug 5, 2020· 102d undetected MT AG + SC AG + CA AG +2
- Data types
- Financial account · Financial credentials · Identity (basic) · PCI MT AG + SC AG + CA AG +3
- Attack vector
- Third-Party / Supply Chain MT AG
Each fact cites the member filing that establishes it; when filings conflict, every value shows with its source.
Count reconciliation
per-state reported counts
Nationwide (stated in a filing)
130,000
Sum of filed state slices
11,106· 8.5% of stated
91% of the stated total lives in states whose filings carry no count — the dashed share shrinks as filings land.
State AGs report only their own residents; teal bars show each state's reported slice. The gray US row is the nationwide total reported in a linked filing.
Evidence ladder — rungs this incident occupies
No leak-site claim on record for this incident.
No press coverage linked yet.
Unlocks: discovery date, data types, affected count, compliance clock.
No SEC filing or victim statement yet.
Merge provenance
- Method
- deterministic
- Confidence
- 1.00 · above the 0.85 auto-merge floor
- Audit
- Every link edge records its method, confidence and model + prompt versions (100% is the strongest edge).
Merges are reversible — a wrong link can be detached with its audit trail intact. How merging works.
Filing velocity
Spread
7 days
Cadence
~1 / 1.2d
vs. multi-state median
1.1× faster
About this clustering
DisclosureLens links filings into incidents through layered matchers: deterministic rules (same source document, multistate filings of one breach, tight-window same-victim pairs), a weighted-similarity scorer for cross-source candidates, and an operator review queue for everything uncertain. Each link records its own method and confidence — shown per filing in the timeline below. The system defaults to NOT merging when uncertain, because a false merge (collapsing two unrelated breaches) is more harmful than a false split (showing related filings separately); uncertain pairs route to human review instead of auto-merging. This page states only what the linked filings agree on; each filing's own account stays on its own record, linked from the timeline below.
The weekly clock on records like this one
The Disclosure Clock is a weekly briefing on what landed in the disclosure record, and the gap between the criminals' post and the regulator's filing — measured on the whole record, with the method shown.
Weekly. Double opt-in, one-click unsubscribe, and the address goes nowhere else.