Blown to Bits

Chapter 3  

Blown to Bits

There are various ways to recover the original information that was written the first time as in chapter 3 the blogger unrestricted the text disclosed position of troops and many other information that was very important to the us government to not let anyone else see. Electronic documents are more easier to change than any written document. When trying to hide something important they use black "highlighter" but you can always go back and change the document and make the words visible. The government also uses a software called Redax which government use to disclose other information that may help the country. Microsoft also offers "track changes" if you enable you may see the entire creation of the paper form the begin to the finish product that has been made. Metadata is built in your computer which allowed information when send ad an email like owner of the computer, the dates of the files creation, and last modified. Leaks can be avoided by making sure that documents are cleansed before release and follow release protocols which can avoid leaks and hacks from people. Photograph are bits in electronic memory are altered by a pattern. if the pattern is printed 0s and 1s the image wouldn't appear. the bit has to be in a more standardized to print on variety of patterns. The representation of a photograph is bit that is called model which transfers the bits representing a digital photo to a computer screen or printer. The model process also applies when music is captured on a CD or MP3. Digital signal processing was to remove scratches and noise from old recordings of the singer Enrico Caruso but it didn't help clean old record. The image with a rectangular grid is a representation of a photo which each row is divided horizontally in tiny square "picture elements" or as many know them pixels. Pixels are found every where you find a digital screen because the image that you are seeing is make of every tiny squares which make up a image. For example 01001001 represents the letter I but it's not always that representation the computer can identify the bits that can change the representation of I. There can be more than 300,000 individual pixels in an image that forms the image. The pixels can also contain color which help it create a image with shading and color. You can also hide information on the images which anti-spam software won't filter them out. Our government had an advantage with the advance technology we have because they can use it as a protection to defend our country which we had caught many using various ways to hide secrets and we have discovered them with our advance technology.