One linked filing — more sources may join as they report · filed Dec 1, 2020. View entity profile → Other incidents for this victim →
incident inc_722159f5666143dc · merge_method deterministic
Discovered → first regulatory filing
Not recorded for this incident
Discovery variance · Leak precedence · Materiality delta · SEC filing delay · Filing span — no leak-site claim in this cluster; no SEC 8-K in this cluster; needs two dated filings.
PII · Identity (basic)
CA
all State AG
Earliest sighting first · deep chronology in Litigation Timeline
Apr 26, 2019 → Nov 22, 2020
When the intrusion reportedly occurred, per the linked filings
Nov 22, 2020
Reported by CALIFORNIA AG filing
MetaBrainz Foundation disclosed a data breach affecting MusicBrainz users between April 26, 2019, and November 22, 2020. User email addresses and dates of birth were exposed in the JSON source code of entity pages. The foundation fixed the code, audited their systems, and implemented new monitoring checks. No passwords were compromised.
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. Filing summaries shown in the timeline are AI-generated extracts — verify each against its linked source.