One linked filing — more sources may join as they report · filed Sep 4, 2023. View entity profile → Other incidents for this victim →
incident inc_4ba91768bf5f4646 · 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.
Identity (basic)
CA
all State AG
Earliest sighting first · deep chronology in Litigation Timeline
Feb 6, 2023 → Feb 9, 2023
When the intrusion reportedly occurred, per the linked filings
Feb 8, 2023
Reported by CALIFORNIA AG filing
On February 8, 2023, the City of Oakland experienced a ransomware incident involving malware that encrypted systems. An unauthorized actor accessed files between February 6 and February 9, 2023. The City engaged third-party experts, alerted law enforcement, and secured its network. Personal information, including names, was potentially compromised. The City is offering identity protection services.
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.