When you delete a file, it isn’t really erased – it continues existing on your hard drive, even after you empty it from the Recycle Bin. This allows you (and other people) to recover files you’ve deleted.
If you’re not careful, this will also allow other people to recover your confidential files, even if you think you’ve deleted them. This is a particularly important concern when you’re disposing of a computer or hard drive.
Have you ever asked yourself why sometimes aren't you able to watch some video files on your computer? this may be due to the lack of a video codec on your computer.
What is a Video Codec?
A codec is software that is used to compress or decompress a digital media file, such as a song or video. Windows Media Player and other programs use codecs to play and create digital media files.
A codec can consist of two components: an encoder and a decoder. The encoder performs the compression (encoding) function and the decoder performs the decompression (decoding) function. Some codecs include both of these components and some codecs only include one of them.
If you've ever been in a situation in which you've almost completed an important project, only to have your computer spontaneously crash seconds before hitting the "save" button, you understand how frustrating losing your data can be.
Now, imagine losing all your important files - everything from business files, to family photos, to your tax returns - permanently. Although many of us prefer to adhere to the mantra of "it'll never happen to me", the truth is, it could. And as computers continue to become the principle way in which many people conduct important transactions, this type of thinking is becoming increasingly risky.