We should all know the rules of how to protect our privacy and keep Windows secure: Don't tap questionable links or download apps from shady sites, don't open unexpected messages and emails, don't give out personal information, use secure passwords, and keep your Windows software up to date. Your buying guide to the best antivirus software Internet security software, or Antivirus software, detects, and then prevents, disarms or removes malicious programmes or malware, often referred to as viruses. Antivirus doesn't offer a perfect solution to the problem of malware, but it's a critical first step to securing your machine. It's also important to keep that software updated. But internet security software is no longer just about countering viruses. Although they still exist, viruses are arguably a minor part of the malware now prevalent on the web. More important now is security of personal data and protection from ransomware. Security exploits aren...