Antivirus: how to check that your computer is protected
Active protection, updates and scans: the checks to make before installing more software.
Check what is already running
On a Windows computer, open Windows Security and check the Virus & threat protection area. Look for the active protection provider and any alert that needs attention. Microsoft Defender Antivirus is built into Windows, so the absence of a commercial product's icon does not mean there is no protection. Conversely, a shortcut to old software is not proof that its subscription and protection are still active.
More software does not always mean more protection
According to Microsoft, installing compatible antivirus software from another provider can cause Defender to turn itself off automatically. Before switching products, check both providers' instructions and the protection status after installation. Do not try to force several real-time protection systems to run without appropriate guidance. On a work computer, contact IT support before changing the settings.
Update and check a scan
Check that the product receives updates and that the scan is not reporting an unfinished action. If an alert appears, read the details inside the security software itself. A browser message claiming your computer is infected is no reason to install a random tool or call the number it displays. Open the product through your computer's usual menu and check whether it shows the same problem.
Before buying a subscription
Compare support for your operating system, device limits, renewal prices and cancellation procedures. Distinguish antivirus capabilities from extras you may not need. Download installers from the provider's official website or a trusted distribution channel. A product promising to solve everything with one click still requires you to understand the permissions you grant and the purchase terms.
Habits that help beyond scanning
Back up important files, install system updates and be cautious with unexpected files and links. Antivirus does not replace checking a request to enter a password or transfer money. If you have a genuine reason to suspect a compromise, avoid sensitive activities on the computer until it is investigated. Record the error message or alert and contact qualified support with the details, rather than deleting files at random.
