Online virus scanners are useful when you suspect that your computer has infected a virus or malware and your antivirus program failed to detect it or if you want to check your computer with another virus engine. Following are some of the most efficient, fast and completely free online scanners. Remember, most of these online virus scanners require Internet Explorer with ActiveX enabled. All are indexed in alphabetical order


1. Bitdefender Online Scanner
2. CA Security advisor
3. Dr. web Online Scanner
4. Eset Online Scanner (NOD32)
5. F-secure Online Scanner
6. Iolo threat center
7. Kaspersky online scanner
8. Macafe Virus scanner
9. Norton online scanner
10. Onecare – (Microsoft)
11. Panda Active Scan
13. Trend micro house call
14. Virus total (scans using 32 virus engines)