McAfee plays an important role in protecting Windows PC, Mac, Android and iPhone from malware and viruses. This antivirus blocks on the internet threats which make the system slow. You should download McAfee antivirus software to secure the personal information which is saved on the device because if the information is not protected, then it can be attacked by the malware. As the cyber threat is increasing, so you have to protect the activities you do online. Go through the download, install and activation steps by visiting the official website mcafee. com/activate mcafee. com/activate.