WPS Office (formerly called: Word Processing System, AKA: Kingsoft Office, and now represents Writer, Presentation, Spreadsheets) is the most popular free and cross-platform office suite in the world at present. It has a longer development history than Microsoft Office (initial release:1988 VS 1990). We can say, it is the only best one in so many free alternatives of MS Office.
Today, wireless network has got very extensive application because of its convenient use and structure, and will eventually cover every corner on the earth, I believe. But due to its broadcast form of data transmission in a wireless network environment, that will inevitably lead to security issues. Of course we can ensure data security by setting different encryption methods in a wireless router, but some loopholes of Wi-Fi network or the router itself can often make every trained hacker be able to crack/hack it.