Teacher:In this task, you're given a short article. Your job is to classify the article based on its category. Use the following classification labels, 0. World, 1. Sports, 2. Business, 3. Science or Technical. Label the text "0" if it contains information related to world. Label the text "1" if it contains information related to sports. Label the text "2" if it contains information related business. Label the text "3" if it contains science or technical related information. 
Teacher: Now, understand the problem? Solve this instance: Microsoft Moves On Spyware To Stymie Firefox (TechWeb) TechWeb - Microsoft bought anti-spyware technology to protect its Internet Explorer browser from surging rivals like Mozilla's Firefox
Student:
3