Security tip #1: disable JavaScript in PDF reader

I would like to start a series of non-regular posts related to basic computer security. Security and cryptography are two areas of computer science that I have a passion for and, unfortunately, are two areas that most computer users do a truly terrible job at. I will try to make these as straight forward as possible so anyone can follow along! For the record, the suggestions I will be making in these tips are simply things that I have found to work for me.