The only way to be sure your computer is safe is to monitor your system and what is put on your computer or have someone trusted to scan your system. Understanding how viruses happen and how to avoid them is crucial. Downloading from sketchy sites and clicking links from untrustworthy emails is an easy way to infect your computer. If you are to download anything make sure it is from a qualified site. If you want to get games it is better to download steam(a popular game store), rather than get the game from a sketchy site that could infect your system with malware. An excellent way to reduce risks to your computer is to use a VPN which can hide your IP from those who wish to send you phishing scams. VPNs keep your information encrypted and some advertise that their VPN can display that you are in different countries for added protection It is also important to keep messages encrypted if possible so you will not be traced back to your system. When messaging others use trusted apps that have their own encryption or allow you to use your own. Also find a trusted service to scan your computer for viruses, many of these apps exist and it is important to do research into which one works best for you. The software scans your computer and its contents to check for any malware or viruses on your system, certain apps will actively scan as you browse the internet and inform you when a virus is detected. This is important but also just another form of monitoring. It is most important to keep yourself encrypted and be careful of what you put into your computer. It is also very important to stay off of public WiFi with any and all devices if you can help it. Public WiFi is nearly impossible to secure and is notorious for being easy to hack and monitor other systems on the network.