Definition: In this task, you are given a news article. Your task is to classify the article to one out of the four topics 'World', 'Sports', 'Business', 'Sci/Tech' if the article's main topic is relevant to the world, sports, business, and science/technology, correspondingly. If you are not sure about the topic, choose the closest option. Note that URLs in the text have been replaced with [Link].
Input: Notice: IE  #39;worm #39; targets IOL ad supplier Every 30th or so request for an advert was redirected to another compromised server, which in turn tried to execute the Bofra Internet Explorer exploit in an attempt to infect the user #39;s machine.

Sci/Tech