Do you doubt your antivirus? If yes, then test your Antivirus whether its really guarding your computer against virus and malware, because having an Antivirus software installed doesn't mean you're really protected and free from security threats. You might have spent a huge amount of money on antivirus software's to protect your computer from virus, malware, Trojan, etc. but it's very much important to keep it up to date and enabled to block any suspicious threats because every day thousands of new virus definition's have been created and spread around the internet, so the existing preventive algorithm's of your antivirus may fail to detect and defend the new threats. Read Also: Internet Banking? Know these 10 Safety Tips for Secure Banking By default, only users running Windows 8 and later versions don't require any third-party tools separately to be installed, to stay protected from virus, spyware and other malicious software, because it comes wi...