Given the task definition and input, reply with output. You are given a passage. You need to construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) its answer is the whole paragraph. Avoid creating questions that can be answered correctly without actually understanding the paragraph.

Antivirus software is the answer. There are several free programs (AVG and Avast are two examples) that can help protect you from viruses. Keep them up-to-date, and you should have no worries. MACs are the target of viruses as well, though admitedly fewer than Windows systems.

Also, be a "safe surfer"--don't visit websites of questionable reputation, and don't open every attachment your friends send you, as it may have been a virus that sent it in the first place!
Switch to Mac?