We are not that perfect in voice recognition. Who knows, this criminal will also target your child, mother, sister, or friend as the next victim. Who knows, he or she will not only get your money but also your or their lives. As we can see, anyone can be easily fooled and the best thing to do is to prevent this.
If only there is a speech recognition software that can help us prevent such circumstances, life may be safer. As human, we are capable of making mistakes but if we make a software that can do speech recognition, then such problems can be avoided.