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Antivirus is cybersecurity software that detects and removes malicious software (malware) from computers and laptops. Malware is code that can harm systems and the data on them – including personal information – and infect devices or spread to other devices via USB drives, email attachments, or by visiting malicious websites. Without antivirus protection, malware can corrupt files, encrypt data, steal passwords, or cause other problems that impact business operations.

Many types of malware exist, such as: Viruses: This type of malicious software infects a device and copies itself to other files or devices. Viruses can also exploit software or operating system vulnerabilities to spread rapidly. Worms: These types of malicious programs self-replicate and can use network or computer resources to spread. Trojans: These malware programs exploit security holes in a device or operating system to gain access to personal or confidential information, or to remotely control a device or network. Ransomware: This type of malicious software encrypts a device or file and demands payment in order to restore the file or access to information.

The best antivirus software is a comprehensive solution that offers a combination of detection methods, such as signature-based detection, heuristics, and behavioral analysis. It should provide frequent updates of malware information and include features such as firewalls, sandboxing, and multi-device protection. It should also have a user-friendly interface and offer responsive customer support. In addition to traditional antivirus software, some solutions offer cloud-based detection to provide a broader range of threat information.