A friend is considering purchasing antivirus software for a new Windows PC and sought advice on the best options. Major antivirus providers include Norton, McAfee, AVG, and Bitdefender, but many features overlap with Windows Defender. Most home users may not need paid antivirus software, as Microsoft and Apple provide built-in solutions. Web browsers and email providers also offer protection against online threats. Windows 11 users can monitor security through the Windows Security dashboard, while Apple users should keep their systems updated. If encountering issues from suspicious links, downloading Malwarebytes is recommended for scanning and repair. The free version is available for both Mac and Windows, but the paid version is suggested for regular use. Opinions on antivirus necessity vary, and those using computers for business may consider investing in a security suite for added peace of mind.