DisclosureLens
GLOBALMalwareManufacturingManufacturingRansomwareBlack BastaRansom DemandedActor NamedMedium

Stemcor

bd_7bc72449d3142a9f · schema v1 · pii pii-v1

Severity

Medium

Discovered

Filed

Jan 23, 2024

To disclose

Affected

Not disclosed

Confidence

50%
Full breach record for Stemcor3 incidents on file

Threat-actor claim — not a regulatory filing

This row is a claim by the ransomware group Black Basta on its public extortion blog. It has not been validated by the victim or any regulator. Treat attribution and counts as the threat actor's assertion until a regulatory filing or victim disclosure corroborates them.

Group activity: ManufacturingDiscovered: 2024-01-23

Source: Ransomware.live

Post text · scraped from the leak site

STEMCOR is a leading independently run service provider for the steel industry. We play a vital role, acting as an intermediary between customers and suppliers. We make complex transactions easy for buyers and sellers. With our specialised expertise and knowledge, we help customers choose from over 3,500 different grades of steel and raw materials available in the market. With our global infrastructure and connections, we ensure they get their product in the right place, at the right time, and at the right price. For suppliers, we use our relationships and long-standing expert knowledge to ensure that their products reach the best customer in the right destinations.SITE: www.stemcor.com Address : Stemcor Group Longbow House 4th Floor, 14-20 Chiswell Street London EC1Y 4TW United KingdomALL DATA SIZE: 1.2tb 1. Employee files 2. Finance 3. Accounting and etc...

Incident timeline — mostly unverified

? — ?

Breach window unknown

Jan 23, 2024

Claim posted

No filing yet · watching

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

Claim → filing

Compliance clock

Not assessable

Tracked as a single-filing incident — the only disclosure on record for this event so far.Unverified claimView incident

Evidence ladder

Leak-site claimThis record

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filing

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

No regulatory filing corroborates this yet — it is the attacker's own assertion. Watch this entity to be notified the moment a filing corroborates or contradicts it.

Source ceiling

  • actor name
  • victim claim
  • ransom/leak status
  • discovery date
  • materiality
  • notification
  • affected count
  • confirmed data types
  • compliance clock

The ✕ fields stay blank until a regulatory filing or victim disclosure lands.