Why and How Not to Hide Extensions in Windows

This file addresses the problem where Windows by default likes to hide the extensions of filenames, such that "britney.jpg" is shown as just "britney". The danger is that "britney.jpg.exe", which is an executable program, would be shown as "britney.jpg" which many would mistake for just a picture. This is potentially very dangerous and confusing. It is the basis for many security problems such as viruses and Trojan horse attacks spread through the internet such as via email, IRC, IM, etc.

The solution is simple - just unhide the extensions.

In Windows 2000 (and more recent):
- select Start | Settings | Control Panels | Folder Options
- select the View tab
- check "show hidden files and folders"
- UNcheck "hide file extensions for known file types"
- Click OK to finish



And Than

For Windows 8 and 8.1

IMPORTANT EXCEPTION:

Even after you unhide the extensions using the above steps, you still cannot see certain hidden extensions for files ending with .shs, .pif, and .lnk (blame Microsoft for its infinite lack of wisdom). Unfortunately these files are executable, and are rapidly becoming the most popular choices for many Trojan horses, such as "Movie.avi.pif" which will look like "Movie.avi", and "LIFE_STAGES.TXT.SHS" which will look like "LIFE_STAGES.TXT". Instead of being a movie and text file, respectively, they are both dangerous Trojans.