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: US Cybersecurity Chief Resigns The director of cyber security for the Homeland Security Department, Amit Yoran, has resigned his post. The issue of whether cybersecurity was receiving sufficient attention at DHS created 

Sci/Tech