Security Service Federal Credit Union | 28,247 followers on LinkedIn. We are on a journey to become America's best credit union. | Security Service Federal Credit Union is among the top credit unions in the nation with a reputation for strength, stability, and convenience. It offers the true benefits of credit union membership with financial services of the highest quality and value, and locations in Texas, Colorado, and Utah. Security Service takes pride in discovering and developing employees who have exceptional character and a passion for helping others.