Bel Fuse, Inc.
bd_5b83133e8bafe1a0 · schema v1 · pii pii-v1
Full breach record for Bel Fuse, Inc. →Threat-actor claim — not a regulatory filing
This row is a claim by the ransomware group Cl0p 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.
Source: Ransomware.live
Post text · scraped from the leak site
Bel Fuse Inc. is a leading global manufacturer of products that power, protect and connect electronic circuits. Founded in 1949, the company offers an array of products including magnetic solutions, power transformers, circuit protection connectors, and power conversion products. These products are used in industries such as computing, telecommunication, automotive and aerospace. Bel Fuse operates from numerous locations across America, Europe, and Asia.
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Incident timeline — mostly unverified
? — ?
Breach window unknown
Nov 21, 2025
Claim posted
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No filing yet · watching
Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.
Claim → filing
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Compliance clock
Not assessable
Evidence ladder
Attacker assertion only. Establishes: claim date, group, alleged victim.
Unlocks: incident narrative, operational impact. Still no compliance clock.
Unlocks: discovery date, data types, affected count, compliance clock.
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.