: Use a reputable service like Have I Been Pwned to see if your email address has appeared in any known data breaches.
: While the file name suggests a Zalando breach, these lists are often "combos" compiled from various older, unrelated data leaks rather than a fresh hack of the specific company named. 20K ZALANDO.txt
: If you have a Zalando account (or any account using a similar password), change it immediately to a unique, strong password. : Use a reputable service like Have I