Some popular antivirus programs that can be used for Windows 8.1 are Bitdefender Antivirus Plus, Kaspersky Anti-Virus, McAfee AntiVirus Plus, Webroot SecureAnywhere Antivirus, Panda Antivirus Pro, Avast Pro Antivirus and AVG AntiVirus, notes PCMag.com. All of these programs received good ratings in independent tests conducted by AV-Test.org in 2015. Four programs were named editor's choice by PCMag.com: Bitdefender Antivirus Plus, Kaspersky Anti-Virus, McAfee AntiVirus Plus and Webroot SecureAnywhere Antivirus.
Antivirus programs are designed to handle many different types of malware, including Trojans, spyware, ransomware, adware and rootkits. Many programs are traditional antivirus tools that scan files and delete malware. Some have additional features such as secure browsers, spam filtering and firewall protection. One popular antivirus program, Bitdefender Antivirus Plus, has many bonus features such as a vulnerability scan and enhanced password manager. It received the best anti-phishing score in tests, notes PCMag.com.
Another good antivirus program for Windows 8.1 is Kaspersky Anti-Virus. It has useful bonus security tools, plus very good malware blocking ability and phishing protection. McAfee AntiVirus Plus features a subscription that lets users install it on any device they own, including Windows 8.1, Mac OS, iOS and Android.
Webroot SecureAnywhere AntiVirus is one of the smallest antivirus programs available, as of 2015, notes PCMag.com. It provides fast scans and good malicious URL blocking.