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First Security Bank is announcing an outage to Online Banking for monthly maintenance which is scheduled to begin Saturday April 19th at midnight CST.  The system will be offline until approximately 5am CST Sunday morning.  


We apologize for any inconvenience and appreciate your patience.



Did You Know?

All transactions for the Extreme Account must be Posted to the account before the last business day of the month. For April all transactions must be posted before the end of the business day on the 29th. Any Pending Transactions on the account on the 30th will count toward the next month's transaction totals.




New to Online Banking ?
If you are a customer, and you have not enrolled in Online Banking, Please click here to Enroll into First Security Bank's Internet Banking

Important Information

First Security Bank will never call, email, or text and ask your account number or other personal information.  If you receive a text message, email or telephone call requesting debit card or other account information, do not provide your personal information, hang up and call us at 888-425-8000.

Customers Traveling

For security purposes, if you intend to use your debit card while traveling please notify First Security Bank. For your protection we have blocked debit card use in countries that have a high risk of fraudulent activity, and we also monitor suspicious activity within the US.
To avoid having your card declined, please call 1-888-425-8000

Terms and Conditions

Click below for updated Terms and Conditions for Online Banking and Bill Payment Services. Acceptance to these terms does not automatically sign you up for Bill Payment services.

Please note a change to the fee schedule section. 

 Online Banking and Bill Payment Services Agreement