The antivirus program F-Secure Internet Security 2015 can be installed quickly and easily, is from my PC (Windows 8) detected easily and does not cause noticeable slowdown for me the computer. It protects 3 PCs for 1 year and takes away much space, installation and menu guidance and updates are simple and easy to handle and I feel well protected. F-Secure Internet Security 2015 protects your computer effectively against all possible threats from the Netzt, and slows down the computer as opposed to well paid programs of other providers only imperceptibly, which I find a very big plus point, my old antivirus program slowed my PC very , Installation is easy, you will be well guided through the installation. For me the best security program. Am very satisfied. Easy, comprehensive and accurate virus scans without reducing the performance of your computer. F-Secure Internet Security 2015 is a very good antivirus program for which I can vote with 5 stars!