Keifert
About the organisation
***.de zoominfo.com/c/keifert-gmbh/429980133 Keifert GmbH master-certified building cleaning company based in Schallstadt, Germany, with over 35 years of industry experience.They offer a comprehensive range of professional services, including office, industrial, and specialized cleaning, as well as janitorial services across the Southern Baden region.As a quality-focused enterprise, the company is certified according to DIN EN ISO 9001 and 14001 standards, ensuring reliable and environmentally conscious solutions for their clients
What the listing means
Keifert appeared on the thegentlemen leak site on 07 July 2026. Groups publish a victim once negotiations stall or as pressure during them, so a listing usually means data was already exfiltrated — the attack itself is dated 06 July 2026, 1 day before the listing. This group has published 134 claims in the last 30 days and remains active.
Recommended actions
- Treat any unsolicited message referencing Keifert as suspicious — leaked data gets weaponised for phishing within days.
- If you hold an account on keifert.de, change that password now, update it anywhere you reused it, and enable two-factor authentication.
- Watch for follow-on extortion: stolen data is often re-leaked or resold after the initial listing.
- A leak-site listing is a claim made by the attacker, not a confirmed breach — check the organisation's own disclosures before acting on it.
Leak-site evidence
Listing URL https://www.ransomware.live/id/S2VpZmVydEB0aGVnZW50bGVtZW4=