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The Best Antivirus Software Protects Devices from Hackers and Cybercriminals

While many operating systems include basic antivirus protection in the form of Windows Defender or macOS XProtect, specialized third-party security programs offer deeper multi-layered defense with features like heuristic detection, cloud integration, machine learning and more. Look for a program with consistent performance and solid phishing protection, good customer support, and a light footprint that doesn’t slow down devices or interfere with system updates. We also take into account a product’s ability to prevent malware from running or spreading, its ease of use and how well it performs in independent lab tests.

How Does Antivirus Work?

Antivirus protection scans your hard drive and incoming data to look for signs of malicious code or viruses. It uses several methods of detection, including signature-based scanning, which compares files to a database of known malware patterns, and heuristic-based analysis, which examines suspicious behaviors to identify new threats. Modern antivirus also looks for exploit prevention, which aims to prevent malware from infecting devices or networks by blocking or removing suspicious code and activity.

Some programs also monitor and detect other types of malware, including worms, which infect computers through vulnerable apps or programs to spread to others, ransomware, which locks user data until they pay a fee, and spyware, which secretly tracks user behavior. Some products also incorporate additional security features such as a firewall and spam filtering, while others provide sandboxing to allow unknown programs to run while isolating them from permanent harm.