Written by Allen Wyatt (last updated March 22, 2021)
The Internet seems to be full of good guys and bad guys, and the bad guys want to take over your computer. That might seem to be an oversimplification, but the fact is that there are thousands of viruses, malware, or trojanware that could infect your system. Sometimes getting infected is as easy as visiting a website that is on an infected server.
So how do you know if your system is infected? Basically, you need to be aware of how your uninfected system normally works and pay attention to anything that changes. Here are a few things that may signal you have an infection. (These are listed in no particular order.)
Of course, virus infection doesn't just exhibit itself in your browser. You may also notice some behavior changes even when your browser is not running. Here are a few things you may notice:
If you have a virus or other malware on your system, you'll typically notice multiple indicators from the above lists, not just one or two. If you begin to believe that you have an infection, contact a local computer repair shop and see if they can check your system. (That is normally the easiest path to an infection-free system.)
This tip (13306) applies to Windows 7, 8, and 10.
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