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Listed on a ransomware leak site

MAMMUT.COM

mammut.com

MAMMUT.COM was listed on the Clop and DataCarry leak site on May 26, 2025. Brandefense has recorded 2 separate claims against it. Information as of Oct 19, 2026.

Updated continuously · figures as of Oct 19, 2026
Claimed by
Clop, DataCarry
First listed
May 26, 2025
Claims recorded
2

2 Leak-Site Claims.

ClopConfirmed claim
Posted on the leak site
Aug 12, 2026
Collected by Brandefense
Aug 12, 2026
Data claimed
Not stated
Leak-site post text, written by the group
Mammut is a Swiss outdoor sports brand founded in 1862, headquartered in Seon, Switzerland. The company specializes in designing and manufacturing high-performance equipment, apparel, and footwear for mountaineering, climbing, skiing, and hiking. Known for its premium quality and innovation, Mammut serves professional athletes and outdoor enthusiasts worldwide, operating across retail stores and e-commerce channels globally.
DataCarryConfirmed claim
Posted on the leak site
May 26, 2025
Collected by Brandefense
Jul 11, 2025
Data claimed
Not stated
Leak-site post text, written by the group
Mammut Sports Group is a Swiss multinational company that specializes in producing and retailing mountaineering and trekking equipment. Known for their high-quality outdoor gear, their product range includes clothing, backpacks, footwear, climbing gear, and sleeping equipment. Noted for their commitment to sustainability and fair working conditions, Mammut emphasizes innovation and technology in their product designs.

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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.