The present invention relates to a system, a method, and a program for preventing unauthorized copies of webcomics and tracking replicated webcomics. A method for preventing unauthorized copies of webcomics according to one embodiment of the present invention comprises: a step (S100) in which a service server separates and stores webcomic images and dialogue text which are included in general webcomic data; a step (S110) of recognizing a user operation for a user client and recognizing a point on a webcomic that has moved from an initial position; and a step (S120) of providing final webcomic data that combines the webcomic images and the dialogue text with respect to an area displayed in real time on a screen of the user client.