Portal.finanzen.immobilienscout24.de is a subdomain dedicated to financing advice from Immobilienscout24, Germany's leading real estate marketplace. Because it sits under a well-known parent brand, the question “is portal.finanzen.immobilienscout24.de a scam” is largely answered by the parent’s reputation. The site provides a proper legal disclosure (Impressum) and privacy policy, which is exactly what you want from a site handling financial queries. The one thing to watch for: the subdomain itself doesn't list direct contact info on its homepage, but the Impressum gives a registered business address and representatives. Also, the site accepts older encryption protocols, a minor technical oversight that doesn't affect day-to-day safety. Overall, this is a trusted extension of a major brand, so concerns about it being fake are unwarranted. If you're comparing financing options for a property, this is a reliable starting point.