CTG files are only used in one capacity -- to index the digital images taken on Canon cameras. The files do not hold the images themselves, but are necessary for the camera to calculate how many images have been taken. CTG files also help a computer populate images during a data transfer.
Protecting your W9 information from threats of identity theft is part of a larger issue of keeping your Social Security number secure. Here are some steps toward better safeguards for the information on your W9.
Choosing between a brand name product and a generic version can be a tough call. You'll save money with the generic, but you don't want to pay for it by sacrificing quality. You must find out how to weigh the differences been your choices.