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Antivirus is cybersecurity software designed to scan for, detect, block, quarantine, and remove malicious or suspicious software from computer systems and enterprise environments.
Historically, many antivirus tools relied heavily on signature-based detection to identify known malware, including viruses and worms. Modern endpoint protection platforms, however, often combine multiple detection techniques to identify a broader range of threats targeting endpoints and enterprise systems.
Organizations commonly use antivirus as one layer within a broader security strategy that may also include patch management, access controls, monitoring, identity protection, and endpoint detection technologies.
When installed on an endpoint, antivirus software may scan files, memory, downloads, processes, email attachments, scripts, and network activity for suspicious behavior or known malware patterns.
For example, if an employee attempts to open a suspicious email attachment, the antivirus engine may block, quarantine, or alert on the file before or during execution. If a threat is detected successfully, the file may be quarantined, deleted, or blocked to reduce the risk of compromise.
Many platforms also perform scheduled system scans that can help identify dormant or previously undetected threats stored on local drives.
Security vendors use several methodologies to identify suspicious or malicious code and reduce the risk of system damage.
| Scanning Method | Functional Approach | Common Use Case |
| Signature Matching | Compares files against databases of known malware patterns | Detecting widespread or previously identified malware |
| Heuristic Analysis | Examines suspicious code structures or behaviors | Identifying modified or previously unseen malware |
| Real-time Monitoring | Monitors files, downloads, scripts, and processes during execution | Blocking suspicious activity before or during execution |
Traditional antivirus and modern endpoint detection technologies often overlap, but there are important differences in scope and visibility.
Traditional signature-based antivirus focuses more heavily on known file-based malware, while modern endpoint protection may also include behavioral and memory-based detection.
Modern platforms may block, quarantine, remove, or alert on threats using signatures, heuristics, behavioral rules, cloud reputation services, and other detection methods.
Standalone antivirus products primarily focus on endpoint-level protection, while Endpoint Detection and Response (EDR) platforms provide deeper centralized telemetry, investigation, and response capabilities across enterprise environments.
Deploying antivirus or malicious-code protection can support baseline endpoint security. It may also help organizations satisfy certain compliance requirements when properly configured.
Businesses use antivirus software to reduce the risk of malware-related downtime, unauthorized access, and endpoint compromise caused by common cyber threats.
However, relying solely on signature-based defenses can limit detection of zero-day exploits and previously unknown malware. Organizations typically strengthen protection through layered controls such as behavioral detection, patch management, identity management, and security awareness training.
Hexnode UEM supports app inventory visibility, application management, compliance policies, and deployment workflows for supported mobile threat defense integrations.
Organizations can also manage approved applications, enforce compliance policies, and support broader endpoint security strategies across managed devices.
Basic scanning can work offline, but internet access helps antivirus tools receive updates and real-time threat intelligence.
Traditional signature-based antivirus may struggle with new ransomware variants, so organizations often use layered security controls for stronger protection.
Running multiple real-time antivirus tools on one device can cause performance issues and software conflicts.