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Listed on a ransomware leak site

Comcast

corporate.comcast.com

Comcast was listed on the Space Bears and Medusa leak site on Sep 26, 2025. Brandefense has recorded 2 separate claims against it. Information as of Oct 19, 2026.

Country: United StatesIndustry: Unknown
Updated continuously · figures as of Oct 19, 2026
Claimed by
Space Bears, Medusa
First listed
Sep 26, 2025
Claims recorded
2

2 Leak-Site Claims.

Space BearsConfirmed claim
Posted on the leak site
Dec 8, 2025
Collected by Brandefense
Dec 8, 2025
Data claimed
Not stated

Posted again 2 times by the same group

Leak-site post text, written by the group
As a global media and tech company, Comcast reaches hundreds of millions of customers, viewers, and guests with world-class connectivity and platforms and beloved content and experiences.The leak was made possible by Quasar Inc., a company that prepares technical documentation for Comсast and its Genesis project. The files contain design documentation for numerous cities, as well as detailed utility plans. [removed]
MedusaConfirmed claim
Posted on the leak site
Sep 26, 2025
Collected by Brandefense
Oct 4, 2025
Data claimed
Not stated
Leak-site post text, written by the group
Comcast Corporation operates as a media and technology company worldwide. It operates through Residential Connectivity & Platforms, Business Services Connectivity, Media, Studios, and Theme Parks segments. The Residential Connectivity & Platforms segment provides residential broadband and wireless connectivity services, residential and business video services, sky-branded entertainment television networks, and advertising. The Business Services Connectivity segment offers connectivity services for small business locations, which include broadband, wireline voice, and wireless services, as…

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Other confirmed victims claimed by the same group
VictimClaimed byCountryIndustryData claimedPosted
Holistic Health Group, Inc. (d/b/a Suncrafted)
massachusetts.it
Space BearsUnknownUnknownNot stated
Alma Center Servizi Medicali S.r.l.
almacenter.it
Space BearsITItalyHealthcareNot stated
Tomix / Grupo JOPER
tomix.com.pt
Space BearsPTPortugalManufacturingNot stated
D-MAX Engineering, Inc
dmaxinc.com
Space BearsUSUnited StatesNon-profit and Civil SocietyNot stated
Sports Endeavors
sportsendeavors.com
Space BearsUSUnited StatesRetailNot stated
Schwartz, Giannini, Lantsberger & Adamson (SGLA)
sglacpas.com
Space BearsUnknownUnknownNot 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.