GLOBALClaimed by LockBit 3.xFirst sighting
Posted to leak site Feb 5, 2024bd_aa11f37e99efbc5f
SEMESCO CO. Ltd was established in 1991 and is a rapidly expanding firm in the field of Specialist Electromechanical and Marine Engineering Services.
One linked filing — more sources may join as they report · filed Feb 5, 2024. View entity profile → Other incidents for this victim →
Attribution, victim identity, and counts shown here derive from a threat actor's public extortion-blog claims, aggregated by ransomware.live. They have not been validated by the victim or any regulator. Treat them as the threat actor's assertion until a regulatory filing or victim disclosure corroborates them.
incident inc_6f34f351be39412a · merge_method deterministic
Not recorded for this incident
Discovery variance · Leak precedence · Materiality delta · SEC filing delay · Filing span — no SEC 8-K in this cluster; needs two dated filings.
all Leak Site
Earliest sighting first · deep chronology in Litigation Timeline
SEMESCO CO. Ltd was established in 1991 and is a rapidly expanding firm in the field of Specialist Electromechanical and Marine Engineering 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.