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Listed on a ransomware leak site

Mailchimp

mailchimpkoulutus.fi

Mailchimp was listed on the Everest leak site on Jul 26, 2025. Information as of Oct 19, 2026.

Country: United StatesIndustry: Unknown
Updated continuously · figures as of Oct 19, 2026
Claimed by
Everest
First listed
Jul 26, 2025
Claims recorded
1

Leak-Site Claim.

EverestConfirmed claim
Posted on the leak site
Jul 26, 2025
Collected by Brandefense
Jul 31, 2025
Data claimed
Not stated
Leak-site post text, written by the group
Mailchimp is a leading marketing automation platform and an email marketing service. The platform allows businesses to design, schedule, and manage email campaigns, from large to small scale. With additional features like audience segmentation, dynamic content, and analytics, it caters to businesses looking to turn their audience data into actionable insights. It also grants users the ability to build websites and landing pages.

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Other confirmed victims claimed by the same group
VictimClaimed byCountryIndustryData claimedPosted
Brenner Base Tunnel
bbt-se.com
EverestITItalyTransportation and LogisticsNot stated
Taekwang Network
tkni.co.kr
EverestKRSouth KoreaTechnologyNot stated
Chugoku Bend
bend.co.jp
EverestJPJapanManufacturingNot stated
Kissei Shoji
kissei-shoji.co.jp
EverestJPJapanFood and BeverageNot stated
Topcon Healthcare
topconhealthcare.com
EverestUSUnited StatesHealthcareNot stated
KVH
kvh.com
EverestUSUnited StatesTelecommunicationsNot stated

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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.