Sometimes, it's hard to tell when you've been hit by malware, and almost impossible to tell what kind (be it spyware, a trojan horse, ransomware, you name it). Hell, there are even rogue scareware programs that look like antivirus or antispyware, but when you install them, you get infected! Always download from the source-avoid third-party download sites. Social engineering and phishing schemes can trick people (you) into clicking on or downloading an infected link or attachment. A device already compromised by malware could get on your network, people can personally place malware on a system, and some malware sits there, dormant, waiting to come to life and attack. However, even the best antivirus isn't 100% foolproof. It's imperative, especially with Windows, that you have antivirus installed. These programs-from free tools and paid antivirus software up to major security suites-keep tabs on your Windows PC with scans, real-time monitoring, even heuristic analysis of files and processes so that new threats can be identified. It should be drilled into you by now: Use antivirus software. How to Set Up Two-Factor Authentication.How to Record the Screen on Your Windows PC or Mac.How to Convert YouTube Videos to MP3 Files.

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