Well its every ones problem to find a right anti virus for your computer or laptop. As in internet new and powerful viruses are increasing day by day you will need a good powerful anti virus to protect you and keep you safe while surfing in the internet. These days not only virus are trying to attack your computer. Spamming , scamming are increasing every single day.. Just with one click you will loose all your password and user name of your accounts drastic isnt it..Well to curtail that a good and efficient anti virus is most essential and my opinion will be avast internet security.You can also use Norton ,kasperesky , avira etc. but of all these avast is the best. Its virus data base is flawless . It also gives you a support of additional firewall. Also you can see all the files that are accessing internet and files uploaded and downloaded to your computer. Most of all avast takes less memory usage which in turn makes you use your computer faster. It updates regularly and is very quick to keep the database updated.