Completely free anti-virus software and download address:

1.Avast! Home Edition

Alwil company from the Czech Republic has a history of 17 years. It specializes in security-related software and developed Avast! Anti-virus software has always been in a leading position in foreign markets. Alwil is confident: High-tech companies do not necessarily exist only in Silicon Valley!

Since 1996, Avast! Received as many as 50 industry awards. Among them, Virus bulletin has won the VB100% award 14 times. In addition, it not only received the 2005 ICA laboratory certification but also obtained the stability certification from Microsoft. The software now has a Chinese version.

Home page address: /thread-973-1-1.html

KEY application address for each version

P version 180-day key application address:

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9. Mozhe:

Mozhe Security Expert is a permanently free immune-based security protection software that integrates Mozhe’s original "removal technique" , lifetime free antivirus, system vulnerability repair, Internet trace cleaning, network firewall, real-time system protection, security mutual aid community and other powerful functions in one. In particular, the original "Geli Technology", using functions such as permission management, can effectively prevent security risks that have not been recognized by firewalls and anti-virus software, and eliminate virus intrusion from the source, thus raising the security threshold of the system and truly serving everyone. Provide users with comprehensive system security protection.

Official website: /

11. Anti-Spyware Toolkit

1. Software introduction

Anti-Spyware Toolkit -Spyware Toolkit) specializes in detecting and assisting in detecting and killing various Trojans, rogue software, various backdoors using Rootkit technology and other malicious codes (spyware, worms), etc. It provides a variety of professional tools, provides system IE repair, privacy protection and security optimization functions, and provides comprehensive system monitoring functions, allowing you to know the changes in the system. With manual analysis, nearly 100% of unknown malicious codes can be detected and killed!

1) The anti-virus capability has been further enhanced, completely comparable to commercial software

China’s first completely free anti-virus engine protects you from viruses;

Fully compatible with other anti-virus software, it takes up little system resources, allowing you to double-insure your computer freely;

Comprehensive detection and killing of Panda Burning Incense, Weijin, Gray Pigeon, My Photos, Robot Dog, AV Terminator, ARP virus, account stealing Trojan and other popular viruses.

2) Real-time protection and active defense protect you from the trouble of account theft and card theft

Key location protection, program behavior and network behavior monitoring keep the latest viruses and Trojans away Hide;

Used by 900,000 online users every day, the real-time protection function is stable and reliable;

3), patch checking and automatic repair, manage your QQ, Baofeng, Xunlei and Lianzhong vulnerabilities together Get up

China's first application patch check and repair, which can directly close existing vulnerabilities before official patches;

Comprehensively check operating system vulnerabilities, accurately provide required patches, download speed is far faster Super official upgrade;

4), powerful and intuitive analysis tools give you a keen eye for analyzing viruses and Trojans

Computer experts’ favorite virus and Trojan analysis tools, you can also Addicted to masters;

Check startup items, processes, services, ports, etc., and highlight unknown items, prohibit process creation and other thoughtful designs;

5), free Free auxiliary functions that are better than commercial software

ARP firewall includes all the functions of other similar paid software, with good protection effect and low performance impact;

System optimization, system repair, file shredding, and more Key repair IE, privacy cleaning and other functions, only install one software, with all functions.

2. Main features

1) A universal automated Rootkit solution that can detect various Trojans and backdoors hidden using Rootkit technology without using traditional signatures.

2) Comprehensive detection of hidden processes, hidden services, and hidden ports.

3). Automatically detect and repair Winsock SPI chain related errors.

4) Restore the system kernel service description table, display and remove the kernel functions that were hooked, and automatically restore the kernel functions that were inline hooked.

5). The original fast matching algorithm performs the fastest scanning and detection at the smallest system resource occupancy level.

6) The scanning module and real-time monitoring use the same copy of the engine and library in the memory, which greatly reduces system resource usage and enables efficient collaboration between modules.

7), memory scanning and static analysis early warning system are organically combined.

8) Based on the broad-spectrum characteristics of the Trojan family, strongly improve the virus detection rate.

9), forward-looking active defense monitoring system, comprehensive detection of unknown Trojans.

10). It is the first in China to support NTFS data stream scanning, making the detection more thorough.

3. Main functions

Inspiration warning, startup management, IE plug-in management, SPI chain automatic detection and repair, Rootkit detection, service management, hidden service detection, filtering Microsoft default services, Service addition and deletion, SSDT (service description table) recovery, process management, hidden process detection, forced uninstallation of DLL modules, detection of hidden ports, disconnection, locating remote IP, WHOIS query, closing ports, IE repair, rogue plug-in immunity, Malicious website blocking, system junk cleaning, smart scanning, file shredder, software uninstallation, system optimization, system repair, right-click virus scanning, vulnerability inspection and repair, system diagnostic report, forum rescue, heuristic scanning, NTFS data stream scanning, signature analysis , program execution permission, application firewall, comprehensive scan, memory scan, directory scan, trust list, real-time monitoring, intelligent upgrade.

Official website: /