Screen scraper

A screen scraper is tracking Software that records images of activity on the computer screen. Screen scrapers typically either store the recorded images and/or video for later retrieval or they transmit] them to the remote process or person employing the screen scraper. There are some legitimate uses of screen scrapers, but they are often used [[maliciously by attackers to surreptitiously track behavior to perform unwanted or unauthorized actions that can include identity theft.

Source
Anti-spyware Coalition Glossary (2007).