Absolute security does not exist in our imperfect universe. Even if it were to exist, the cost would be infinite and its usability would be zero. Good security is imperfect - but usable - security, and results from making a series of intelligent choices at several levels. GT.M is widely used around the world in banking and finance. K.S. Bhaskar will discuss the philosophy of GT.M's security - how not implementing its own security is what makes GT.M secure.