DisclosureLens
All entities
norm: markham stouffville hospitalno LEI · no CIKMax severity: Medium
Canonical registry

Markham Stouffville Hospital

ent_eec69da89babd7d5b7de81d5

Disclosures

1

Leak Site · 1 jurisdiction

Multi-filing incidents

no multi-filing incident in sample

Max affected reported

no filed count in sample

Leak-site claims

1

unverified actor claims

Identity resolution

Canonical name
Markham Stouffville Hospital
Normalized
markham stouffville hospital— dedupe via name-norm; Microsoft / MSFT collapse to one row
GLEIF LEI
No match
SEC EDGAR CIK
None — not an SEC registrant
Domain
oakvalleyhealth.ca

Unverified threat-actor claim — not a regulatory filing

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.

Disclosure history (1)newest first

Markham Stouffville Hospital data breach claims (2025) — unverified leak-site allegations · DisclosureLens