THE HACKER ATTITUDE

Today a friend of mine in workplace asked for my help to recover his lost audio files which in his audio recorder. I was just copied all the files in his recorder to my PC and tried to play them, but I couldn't find a single newly recorded audio file. Then I did a test record just to check. It seems like file does not save at all. This is weird I thought. Instantly, I noticed there were some strange files with .act extension also have stored in same folder. I realized that my friend had changed saving file type 'wav' to 'act' without knowing that he would not be able to play the recording in any player. Later on, I...