As the body of anti-virus software grows and the resource usage increases, there are more and more "streaking" People (streaking is not secure ). in fact, as long as you have good habits, pay more attention to them at ordinary times, even if you do not install anti-virus software, it is not a great threat.
But what if I suspect that the system is secure? Do I have to install anti-virus software once? In this case, the best solution is online detection, which is fast and free. Here is a list of online virus and Malware detection services, which I believe can meet your needs.
Avast-Avast's online version can detect a single file up to kb. Http://onlinescan.avast.com
BitDefender-the online version of BitDefender can scan the entire system and only support Internet Explorer. Http://www.bitdefender.com/scan8/ie.html
Computer Associates Malware detection-detects a single file. Aspx "> http://ca.com/us/securityadvisor/virusinfo/scan.aspx
Eset-checks whether the entire system has malware. Http://www.eset.com/onlinescan/
Freedom-Detects the entire system. Http://www.freedom.net/viruscenter/onlineviruscheck.html
Jotti's Malware Scan-uses multiple engines to Scan the files you upload at the same time. Http://virusscan.jotti.org/
NanoScan.com
Panda Security-detects the presence of worms, viruses, Trojans, and other malware in your system. Http://www.pandasecurity.com/usa/homeusers/solutions/
Activescan/default.htm? Track = 80383
TrendMicro-Detects viruses, spyware, and malware in the system. Http://housecall.trendmicro.com
VirusTotal.com-scan a single file up to 10 MB with more than 30 anti-virus engines. Http://www.virustotal.com