n (computer science) the name given to a computer file in order to distinguish it from other files; may contain an extension that indicates the type of file
Intego uncovers new image-based Trojan, installs backdoor on Macs A file that looks like a image file and bears a camera-like filename with the extension not visible by default has been discovered to actually be a rogue application that could install a permanent "backdoor" on Mac systems and triggers Preview to open an image, fooling the user into thinking it was simply an unusual picture file. The purpose of the Trojan appears to be supportive of the hacker ...
Sept. 17, 2013 - MacNN