Home > Personal > Personal Lending > Mortgage > Mortgage Resources > Glossary > Security Interest Security Interest November 9, 2021 The lender’s right to take property that has been offered as security.You Might Also Like: Living QuartersSpring Maintenance Checklist for Your Home All Things CommunityHoli-days of Giving 2022 Everyday MoneyGiving Back During the Holiday Season Living QuartersYour Top Mortgage Questions Answered Living QuartersHow to Understand Mortgage Language