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Listed on a ransomware leak site

CommTank

commtank.com

CommTank was listed on the The Gentlemen leak site on Oct 30, 2026. Information as of Oct 30, 2026.

Updated continuously · figures as of Oct 30, 2026
Claimed by
The Gentlemen
First listed
Oct 30, 2026
Claims recorded
1

Leak-Site Claim.

The GentlemenConfirmed claim
Posted on the leak site
Oct 30, 2026
Collected by Brandefense
Oct 30, 2026
Data claimed
Not stated
Leak-site post text, written by the group
commtank.com CommTank Inc is a US storage tank contractor founded in 1997 in Winchester, Massachusetts, specializing in installation, removal, inspection and maintenance of underground and aboveground storage tanks across New England and the Mid-Atlantic. With 50 to 100 employees and estimated revenue of 10 to 25 million dollars, it serves government facilities, hospitals, schools and industrial clients across 8 states. Its services cover the full tank lifecycle including UST and AST installation, leak testing, cathodic protection, soil remediation and emergency spill response. Led by founder…

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Angeles Contractor
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Other confirmed victims in the same industry
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Programs for Parents, Inc.
programsforparents.org
Booba-projectUSUnited StatesNon-profit and Civil SocietyNot stated
Partido Liberal
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WhitearmorBRBrazilNon-profit and Civil Society114 GB
Horn of Africa Regional Environment Centre and Network
hoarec.org
N0nETEthiopiaNon-profit and Civil SocietyNot stated
Girl Scouts of Eastern Massachusetts
gsema.org
WallstreetUSUnited StatesNon-profit and Civil SocietyNot stated
victim
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SarcomaGBUnited KingdomNon-profit and Civil SocietyNot stated
Prodiel
prodiel.com
QilinESSpainNon-profit and Civil SocietyNot stated

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Figures as of Oct 30, 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.