McMunn & Yates Building Suppliesorp
bd_33920e4604b7ad3d · schema v1 · pii pii-v1
Full breach record for McMunn & Yates Building Suppliesorp →Threat-actor claim — not a regulatory filing
This row is a claim by the ransomware group Sarcoma 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
McMunn & Yates Building Supplies It is a story about family first and foremost, of two families coming together. McMunn & Yates was formed in 1971 when Terry Yates and Stan and Gordon McMunn opened their first store in Dauphin, MB. With combined experience in both contract work and retail, this union of families put their faith in each other to build and rebuild something larger than themselves, now hundreds of families serving their local communities large and small. McMunn & Yates is committed to and believe in the hometown values and doing business with their friends and neighbors. We believe the "and" in McMunn & Yates is more than just a conjunction because without it, there are no connections and no commitment. We believe its this commitment to building strong, honest relationships that is the foundation upon which McMunn & Yates rests. McMunn & Yates Commercial Division is a major supplier to builders and contractors. Our Contractor Division delivers with a dedicated team that handles phone-in orders in an efficient and timely manner and provide enhanced contractor services. TIM-BR-FAB Industries is a manufacturer of roof and floor trusses and supplier of pre-engineered wood products serving Manitoba, Saskatchewan and Northwestern Ontario with quality products from its two manufacturing plants located in Dauphin, MB and Oak Bluff, MB. Tim-Br-Fab has a wide selection of manufactured truss systems to choose from or you can work with our specialized design team to build what is right for you. Our cost effective designs are tailored to meet our customers needs and we offer the most durable roof and floor components available today. McMunn & Yates Post Frame Division manufacturers post-frame buildings. Available in fully customized range of styles and sizes, McMunn & Yates Post Frame Division delivers the strongest posts, industry-wide. Steinbach Concrete Divisio
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Incident timeline — mostly unverified
? — ?
Breach window unknown
Oct 15, 2024
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.
sarcoma
According to ransomware.live, Sarcoma is a ransomware group that debuted in October 2024, immediately ranking among the top three most active groups globally and surpassing 116 documented victims by mid-2025, targeting mid-market companies across manufacturing, retail, healthcare, legal, and business services with roughly 50% of victims in the United States.