Windows has several layers of security. First there is the Windows firewall. It is always on unless it is turned off. Windows 10 also includes malware protection. The term malware refers to viruses, Trojan horses and other software that could potentially damage, or take control of your computer or steal information from it. You must, however, be vigilant. Opening a malicious email and clicking on and attachment or web link can cause a virus to be downloaded before Windows has had a chance to scan it. If an email has a link or an attachment be wary, even if you recognize the sender. If the email or message, for that matter, asks you to open a website or download a file, and you’re not expecting it, don’t.