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The best antivirus replacement for Windows and Mac monitors your devices, detects malware, and eliminates it before it causes damage or steals personal data. It also stops the infiltration of new malware into your computer. Antivirus software typically detects and guard against viruses such as worms, viruses, Trojans such as spyware, adware keyloggers, cryptojackers and rootkits.

The software works by analyzing traffic and files, identifying malicious code, and analyzing for evidence of infection by viruses. The software can also alert you to potentially harmful downloads and block malicious websites. Many antiviruses come with an internet fire wall and a virtual private networking (VPN) and parental controls and password manager. Some antiviruses are free but others require subscriptions.

Advanced antivirus products, unlike older software that relies on signature-based detection, employ machine-learning and behavior analysis to detect threats. They’re especially effective in preventing ransomware and zero-day attacks.

Antivirus programs also stop viruses from reproducing while your operating system remains in operation. In order to do this, they execute a boot scan command that shuts down your operating system and scans your hard drive for potentially infected data.

Bitdefender, Avast and Norton are the top-rated antivirus solutions. They have outstanding malware detection rates. They’ve earned top marks from independent testing labs like AV Comparatives, AV-Test, and SE Labs and offer robust real-time protection. They are available for Windows, macOS and Android. Avira is a different Kaspersky competitor that offers excellent security against malware, without consuming your processor. It is also available for Windows macOS and Android, and offers various other security tools.