All the free antivirus programs we've selected here offer real-time malware protection. Your antivirus should certainly have the ability to root out existing malware, but its ongoing task is to prevent ransomware, botnets, Trojans, and other types of nasty programs from getting a foothold. Well, good news! You can get effective antivirus protection without paying a dime. It seems unfair that you have to pay money for programs to protect you against malware attacks. They steal and sell your personal data, or weasel into your financial accounts to siphon out cash, or trash your important files and demand a ransom to restore them. People who write malware are in it for the money.

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