ClamAV (Clam AntiVirus) is an open-source, cross-platform antimalware toolkit designed to detect a wide range of malicious software, including viruses, trojans, and malware. Originally created for Unix environments, it has evolved into a standard security solution deployed worldwide, particularly on mail servers as a server-side email virus scanner. Its flexible architecture allows it to scale from lightweight personal setups to heavy enterprise mail gateways. Today, ClamAV supports multiple operating systems including Linux, macOS, and Windows. It features a powerful multi-threaded scanning daemon, command-line utilities, and an automatic signature database updater. Trusted by administrators globally, ClamAV provides robust defense capabilities without licensing fees, making it an essential component of modern cybersecurity infrastructures.

• Cross-Platform Compatibility: Fully supported on Unix, Linux, macOS, and Microsoft Windows environments for versatile deployment.
• Mail Server Integration: Engineered specifically to act as a robust server-side email gateway scanner to intercept malicious attachments.
• Automatic Database Updates: Includes the 'freshclam' utility to automatically fetch and apply the latest virus signature definitions.
• Deep File Analysis: Capable of unpacking and scanning compressed archives, document formats, executable packers, and disk images.
• Powerful Command-Line Tools: Provides comprehensive CLI utilities for flexible scanning automation, cron jobs, and scripting.

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• 1
  Obtain the ClamAV software package from the official source or your Linux distribution's package repository.
• 2
  Initialize and update the virus signature database by running the 'freshclam' command utility.
• 3
  Execute the 'clamscan' command in your terminal to begin scanning target directories and files.

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• Public Distribution Permission: OFFICIALLY PERMITTED TO REDISTRIBUTE (100% Legal Release)
  (Guaranteed rights to freely download, copy, and share in unmodified form under open-source / freeware terms).
• License Model & Status: GNU General Public License v2.0 only.
• Official Distribution Permission: Under the official ClamAV license (GPL-2.0-only), this software is free and permits unrestricted downloading and distribution.
• Official Project Homepage: https://www.clamav.net.
• Exact License & Terms Link: https://www.gnu.org/licenses/gpl-2.0.html.
• Official License Registry (Alternative Legal Source): https://www.gnu.org/licenses/gpl-2.0.html.

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