360 Total Security (360安全卫士) : Free antivirus and PC cleanup suite from Qihoo 360, a Beijing security firm.

360 Total Security is the English edition of 360 Safeguard, the free Windows antivirus from Qihoo 360, a Beijing company whose security tools are among the most widely installed on Chinese PCs.

Besides virus and trojan scanning, it adds one-click PC cleanup, startup-speed optimization and checks for missing Microsoft Windows security patches.

The international version targets users outside China with an English interface and keeps its core protection free to use.

Does 360 collect my personal data?

360 is known for extensive data collection. It scans files, monitors system activity, and collects browsing data. Data is subject to Chinese law. The company has been involved in privacy controversies. Use the international version for reduced tracking.

Is 360 Total Security safe or is it bloatware?

360 has been criticized as bloatware. The China version installs multiple bundled products, shows pop-up ads, and collects extensive user data. The international version is cleaner. Independent lab tests show good malware detection rates but at the cost of privacy.

Is 360 Total Security available in English?

360 Total Security has an international version at 360totalsecurity.com with English support. It is China's most popular antivirus. The China version (360.cn) has more features but is Chinese-only and more aggressive with ads.