Is my firstfirst financial account secure? First Financial is strongly committed to helping you protect the security and confidentiality of your account. We’ve integrated controls to enhance the security of our online banking service. You must have a valid online banking login ID and password to logon.How do i contact first financial bank customer service? Customer Service - 855-660-5862 24 Hour Automated Telephone Banking System - 800-588-4925 To speak with a specific employee - 800-588-7000 First Financial Banking HoursWho is first financial security? A national brokerage agency, First Financial Security, Inc. is a leader in providing financial products and services to meet the needs of middle Americans. First Financial Security is committed to changing the face of insurance through persity and innovation.What is the mailing address for first security bank? Our mailing address: Mailing Address First Security Bank P.O. Box 1009 Searcy, AR 72145