Google translation: <a href="https://translate.google.com/translate?sl=auto&tl=en&u=https%3A%2F%2Fwww.heise.de%2Fct%2Fartikel%2FDaten-Leak-bei-Autovermietung-Buchbinder-3-Millionen-Kundendaten-offen-im-Netz-4643015.html" rel="nofollow">https://translate.google.com/translate?sl=auto&tl=en&u=https...</a><p>tl;dr: Backup to their customer database was accessible without authentification. Data includes names, addresses, phone numbers, bookings, id card numbers, employer, crash reports, witnesses and more