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Listed on a ransomware leak site

JB Brown & Sons

jbbrown.com

JB Brown & Sons was listed on the Sinobi leak site on Oct 8, 2025. Information as of Oct 19, 2026.

Country: United StatesIndustry: Consulting
Updated continuously · figures as of Oct 19, 2026
Claimed by
Sinobi
First listed
Oct 8, 2025
Claims recorded
1

Leak-Site Claim.

SinobiConfirmed claim
Posted on the leak site
Oct 8, 2025
Collected by Brandefense
Oct 9, 2025
Data claimed
50 GB
Leak-site post text, written by the group
J.B. Brown Sons is a commercial property management and development company based in Portland, Maine, with over 200 years of experience in real estate. The company specializes in owning, leasing, and managing a variety of commercial properties, including office, warehouse, manufacturing, retail, and mixed-use buildings. Aimed at long-term stable growth, J.B. Brown Sons offers responsive services to assist tenants with their commercial space needs. Their portfolio of properties and development projects reflects their deep-rooted presence in the Greater Portland area.

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Figures as of Oct 19, 2026. Confirmed leak-site claims collected by Brandefense technologies and validated by Brandefense analysts.

Listed on a leak site means a ransomware group has claimed the company; it is not a confirmed breach. To request a correction or removal, contact Brandefense.